Brands

Transport Tubes & Vials

<h2 data-section-id="1lg84vb" data-start="0" data-end="32">What Are Drosophila Products?</h2>
&nbsp;
Drosophila melanogaster (fruit fly) research relies on a range of specialized consumables used for culturing, maintaining, and studying fly populations. These products include culture vials, stock bottles, plugs and closures, prepared or dry-mix culture media, and various accessories used for handling and transferring flies. Universities, research institutes, biotechnology companies, and pharmaceutical laboratories use these consumables daily for genetics, developmental biology, neuroscience, and disease-model research.
MBP supplies Drosophila culture products including polypropylene and polystyrene vials, stock bottles, and cellulose acetate plugs designed to support both small research groups and high-throughput fly facilities. In many laboratories, these consumables represent some of the most frequently used products, with large facilities consuming thousands of vials each week.
Successful Drosophila research depends on three essential consumable categories: culture vials and bottles, plugs and closures, and culture media. MBP provides all three for routine and large-scale fly laboratory operations.
&nbsp;
<h2 dir="ltr">Featured Products at MBP:</h2>
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
Drosophila Wide Vials and Narrow Vials for versatile culture sizing and clear specimen observation.
</li>
<li dir="ltr" aria-level="1">
Drosophila Wide and Narrow Vial Combo Packs for ready-to-use, complete breeding setups.
</li>
<li dir="ltr" aria-level="1">
Drosophila Wide and Narrow Vial Closure Plugs to ensure secure airflow and prevent escapes.
</li>
<li dir="ltr" aria-level="1">
Drosophila Bottles and Closure Plugs for robust large-scale colony housing.
</li>
<li dir="ltr" aria-level="1">
Drosophila Trays for organized, stackable, and space-saving storage solutions.
</li>
</ul>
&nbsp;
<h2 dir="ltr">Technical Specifications:</h2>
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
Aluminum Metal Trays and Plastic Trays for durable organization.
</li>
<li dir="ltr" aria-level="1">
Round Bottom and Square Bottom Bottles for different benchtop needs.
</li>
<li dir="ltr" aria-level="1">
PP, K-Resin, PS, and PE Material Options for varied clarity and chemical resistance.
</li>
<li dir="ltr" aria-level="1">
Bulk-Packed and Tray-Packed Packaging Types for high-volume lab efficiency.
</li>
</ul>
&nbsp;
<h2 data-section-id="fnjwt6" data-start="1168" data-end="1207">How to Choose Drosophila Consumables</h2>
&nbsp;
Culture Vials: Polystyrene vs Polypropylene
Polystyrene (PS) culture vials are widely used in Drosophila laboratories because of their excellent optical clarity. Researchers can easily observe fly activity, count offspring, and monitor food quality through the vial walls. These vials are commonly available in standard and narrow formats and are often preferred for routine colony maintenance and experimental work.
Polypropylene (PP) culture vials offer greater durability and can be autoclaved for sterilization. They are suitable for laboratories that reuse vials or operate workflows involving repeated washing and sterilization cycles. While slightly less transparent than polystyrene, polypropylene provides excellent resistance to physical damage and repeated handling.
Stock Bottles vs Culture Vials
Culture vials are typically used for individual fly stocks, single genetic crosses, and small-scale experiments. Their compact size makes them ideal for maintaining large numbers of separate fly lines.
Stock bottles provide greater capacity and are used for colony expansion, mass fly production, large-scale crosses, and eclosion collection. Their larger volume supports higher fly populations and greater quantities of culture media. Bottle designs are often optimized to minimize fly escape and improve handling during routine laboratory work.
Plugs and Closures
Cellulose acetate plugs are commonly considered the preferred closure option for Drosophila culture containers. Their dense structure promotes airflow while reducing moisture loss and helping protect cultures from contamination and mites.
Foam plugs are lightweight, reusable, and easy to handle, making them popular in high-volume laboratory environments where closures are repeatedly removed and replaced.
Paper lids are frequently used in automated filling operations and high-throughput culture systems where rapid processing is important.
Culture Media
Drosophila culture media provide the nutrients required for growth and reproduction. Dry-mix media formulations typically contain ingredients such as cornmeal, agar, yeast, and other nutritional components and are prepared by mixing with water and heating before use.
Ready-to-use media eliminate preparation steps and can be dispensed directly into culture containers, reducing labor and improving consistency in large-scale fly facilities.
&nbsp;
<h2 data-section-id="hwm9vz" data-start="3613" data-end="3647">Drosophila Consumables Overview</h2>
&nbsp;
Culture vials are available in polystyrene or polypropylene formats and are used for maintaining fly stocks, performing genetic crosses, and supporting routine laboratory experiments.
Stock bottles provide increased culture capacity and are commonly used for colony maintenance, large-scale breeding programs, and mass fly collection.
Cellulose acetate plugs serve as the primary closure system for many fly laboratories, helping maintain airflow while minimizing evaporation and contamination risks.
Foam plugs offer a reusable alternative that supports efficient handling in high-throughput environments.
Culture media, available as dry mixes or prepared formulations, supply the nutrients necessary for maintaining healthy Drosophila populations throughout experimental and breeding workflows.
&nbsp;
<h2 data-section-id="1jl751w" data-start="4471" data-end="4496">Specifications Context</h2>
&nbsp;
Polystyrene Drosophila vials provide excellent optical clarity and feature straight-wall designs that facilitate filling, plugging, storage, and rack organization. Polypropylene vials offer durability, autoclave compatibility, and extended service life in reusable laboratory systems.
Cellulose acetate plugs are manufactured from non-shedding material that helps reduce evaporation and provides effective protection against contamination and mites. These closures are widely used in academic and commercial fly research facilities.
As of 2026, MBP supplies Drosophila vials, stock bottles, and related consumables in bulk quantities suitable for both routine laboratory use and large-scale fly room operations. Product availability, media options, and packaging configurations may vary based on current inventory and laboratory requirements.
<a href="https://mbpinc.net/contact-us">Request a quote from the helpful team at MBP</a> for competitive pricing.

Drosophila Products

Drosophila Wide Vials Combo

Drosophila vials combo and bottles combo are available · Disposable vials are safe and cost-effective alternative to glass vials · Bottles combo with square or round bottom · Bulk or tray packaging,

Drosophila Wide Vials Combo，Material：PS（vials），Size: 28.5*95mm，Tray Packed，Package：100 vials/tray，5 trays/case

Drosophila Wide Vials Combo，Material：PP（vials），Size: 28.5*95mm，Tray Packed，Package：100 vials/tray，5 trays/case

Drosophila Wide Vials Combo，Material：K-Resin（vials），Size: 28.5*95mm，Tray Packed，Package：100 vials/tray，5 trays/case

Sample Storage Container

<h2 dir="ltr">What are Urine Collection Products?</h2>
 Urine collection products for laboratory use are containers and preservative systems designed to collect, stabilize, and transport urine specimens for urinalysis (UA), urine culture (C&amp;S), nucleic acid-based testing (NAAT for STIs), cell-free DNA (cfDNA) liquid biopsy, and 24-hour timed collections. Formats include sterile cups (30&ndash;60 mL), preservative tubes (5&ndash;50 mL), vacuum-draw urine transfer tubes, 24-hour collection containers (2&ndash;3 L), and preservative-prefilled devices for ambient-temperature stabilization of DNA, RNA, and proteins. Choose urine collection products with an active preservative when specimens cannot be processed within 2 hours of collection, when samples must be shipped to a centralized lab, or when nucleic acid integrity over 24+ hours is required.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" role="presentation">Sterile urine collection containers for routine diagnostic sampling</li>
<li dir="ltr" role="presentation">Urine transport tubes for secure handling and transfer workflows</li>
<li dir="ltr" role="presentation">Preservative urine tubes for culture and urinalysis stability</li>
<li dir="ltr" role="presentation">Midstream urine collection systems for contamination reduction</li>
<li dir="ltr" role="presentation">24-hour urine collection containers for metabolic testing workflows</li>
<li dir="ltr" role="presentation">Leak-resistant screw-cap urine tubes for safe transport</li>
<li dir="ltr" role="presentation">Graduated urine containers with volume markings for easy measurement</li>
<li dir="ltr" role="presentation">Pediatric urine collection solutions for low-volume sampling</li>
<li dir="ltr" role="presentation">Closed-system urine transfer devices for reduced exposure handling</li>
<li dir="ltr" role="presentation">General laboratory urine collection consumables for research use</li>
</ul>
<h2 dir="ltr"> How to Choose Urine Collection Products</h2>
 Application: Culture vs. NAAT vs. Nucleic Acid Research For culture (C&amp;S), use sterile cups or boric acid preservative tubes. For NAAT (STI panels for Chlamydia, Gonorrhea), use sterile cups or manufacturer-validated transfer tubes; confirm with your platform's IFU (e.g., Hologic Aptima Combo 2 uses a specific urine transport tube). For nucleic acid research (cfDNA, RNA, protein), use dedicated urine preservative tubes (Norgen, Streck) that stabilize analytes for up to 72 hours at room temperature. Volume: Random vs. 24-Hour Collection Random midstream urine (10&ndash;30 mL) is adequate for urinalysis, culture, and NAAT. Timed 24-hour collections (total volume 500&ndash;3000 mL) require large-volume containers with the appropriate preservative for the ordered panel. Mixing 24-hour containers with different preservatives is a common error&mdash;verify the correct preservative type with the laboratory before dispensing to the patient. Preservative Compatibility Boric acid tubes maintain bacterial counts for culture up to 24 hours at room temperature. Boric acid is NOT compatible with NAAT workflows&mdash;it inhibits PCR. For NAAT, use plain sterile containers or manufacturer-specific transfer tubes. For liquid biopsy cfDNA, Streck Cell-Free DNA Urine Preservative maintains cell integrity and prevents genomic DNA contamination for up to 72 hours. Sterility All urine containers intended for culture must be certified sterile. Containers for NAAT must be certified DNase-free and RNase-free to prevent nucleic acid contamination from the container. Confirm sterility and nuclease-free certification in the manufacturer's datasheet before use in molecular workflows. Automated Compatibility For high-throughput labs using automated urine analyzers (Sysmex UF-5000, Siemens CLINITEK), confirm that the collection tube format and cap design are compatible with tube-handling robotics. Copan UriSponge&reg; (FDA-cleared October 2024) is a boric-acid-free device validated for direct loading on WASP&reg; automation systems. 
&nbsp;
<h2 dir="ltr">Specifications Context</h2>
 Standard urine collection cups are manufactured from transparent polypropylene (PP) or polystyrene (PS) with wide-mouth, screw-cap lids. Sterile cups rated for culture meet ISO 7886 and are non-pyrogenic. Boric acid preservative tubes contain approximately 1.8% boric acid, stabilizing bacterial counts by creating a bacteriostatic environment. Norgen urine preservative tubes (5&ndash;50 mL, available in multiple sizes) stabilize DNA, RNA, microRNA, and protein from fresh urine for over 2 years at room temperature per manufacturer validation data. As of 2026, liquid biopsy studies using urine cfDNA routinely use Streck Cell-Free DNA Urine Preservative (3 mL per 30 mL urine) as the standard stabilization protocol in published clinical research protocols. 
Need help picking the right urine collection setup? <a href="https://mbpinc.net/contact-us">Contact MBP</a>, and we&rsquo;ll help you sort it out fast. No confusion, just the right fit for your workflow.

Urine Collection Products

Tubes, Caps & Racks Catalog

TDS-6148

Drug Test Container

6236 by Globe Scientific — 90 mL sterile polypropylene drug test container with attached white quarter-turn screwcap, Celsius thermometer strip, and Tab-Seal patient ID label. For workplace and clinical urine drug testing. 300/cs.

Manufacture

Drug Test Container, 90mL, Wide Mouth, Attached White Screwcap, STERILE, Tab-Seal Patient ID Label & Celsius Thermometer Strip, PP, CS/300

Drug Test Container, 90mL, with Attached White Screwcap, STERILE, Tab-Seal Patient ID Label & Thermometer Strip, PP, CS/400

<h2>What are pressing dies?</h2>
&nbsp;
Pressing dies are the precision-machined tooling inserted into a laboratory press that define the size and shape of a pressed pellet or disc, typically consisting of a cylindrical barrel, a bottom punch or anvil, a top punch, and sometimes an evacuable port. The die determines the pellet diameter, the achievable pressure per unit area at a given press force, and the surface finish quality of the pressed pellet. Standard die sizes are 13 mm for FTIR KBr pellets and 25, 32, or 40 mm for XRF pressed powder pellets, with stainless steel for most applications and tungsten carbide for trace element work where steel contamination must be avoided.
&nbsp;
<h2>What you will find:</h2>
&nbsp;
<ul>
<li>Square Easy Retrieve Dry Pressing Die Set</li>
<li>Cylindrical Easy Retrieve Dry Pressing Die Set</li>
<li>Evacuable Pellet Die Set</li>
<li>Mini Pellet Press Die Set</li>
<li>Hydraulic Press Die Accessories</li>
<li>Pellet Pressing Die Components</li>
</ul>
&nbsp;
<h2>How to choose pressing dies</h2>
&nbsp;
Match die diameter to your analytical instrument's sample holder
The 13 mm die is standard for FTIR spectrometers where the 13 mm pellet fills the aperture of the sample holder, while XRF instruments use 25, 32, or 40 mm diameter cups depending on the specific spectrometer model and cup type. Confirming the required pellet diameter from your instrument's user manual or sample cup dimensions prevents ordering the wrong die size.
Choose evacuable dies for cleaner FTIR pellets in humid environments
An evacuable die includes a vacuum port and o-ring sealed barrel that allows the die contents to be evacuated with a vacuum pump before and during pressing, removing air and moisture from the KBr-sample mixture. This produces pellets with reduced water absorption backgrounds in the FTIR spectrum, important for trace amount analysis where water vapor bands could obscure analyte peaks.
Choose tungsten carbide (WC) dies for trace element XRF analysis
Stainless steel dies contain iron, chromium, and nickel that can contaminate pressed pellets at trace levels detectable by XRF, while tungsten carbide dies introduce only tungsten and carbon, which are not typically analytes in environmental or geological XRF work. For trace element XRF analysis, WC dies are required to avoid systematic contamination of pressed pellet surfaces from the die.
Confirm die compatibility with your press model
Die sets must be compatible with the bore dimensions and plate geometry of the specific press. Confirm that the die outer diameter matches the press die seat before purchase, since dies and presses from different manufacturers may not be interchangeable.
Maintain dies correctly to preserve pellet surface quality
Scratches or pitting on die surfaces transfer defects to pressed pellets, reducing optical quality for FTIR or surface flatness for XRF. Regular gentle cleaning and periodic polishing with fine alumina paste on punch faces maintains die surface quality.
&nbsp;
<h2>Specifications context</h2>
&nbsp;
The pressure applied to the sample equals press force divided by die area: a 10-ton press through a 13 mm die produces approximately 700 MPa, while the same force through a 40 mm die produces approximately 75 MPa. Producing the same pellet density in a larger die therefore requires proportionally more force, and a press adequate for 13 mm FTIR pellets may not deliver sufficient compaction for 40 mm XRF dies.
<a href="https://mbpinc.net/contact-us">Request a quote today from the expert team at Molecular Biology Products Inc. (MBP)</a> to find the right pressing dies for your lab.

Pressing Dies

Dry Pressing Die Set Specifications

Dry Pressing Die Set

A set of hardened steel dry pressing die set for pellet presses, are ready for you to make cylinder-shape pellets. These pressing die sets are available in different sizes ranging from 6mm to 100mm diameter.\r\n\r\n

Manufacturer

6mm ID Pressing Die Set w/ 2 Push Rods

8mm Diameter ID Hardened Steel Dry Pressing Die Set

10mm Diameter ID Dry Pressing Die Set

13mm Diameter ID Dry Pressing Die Set

15mm Diameter ID Dry Pressing Die Set

20mm Diameter ID Dry Pressing Die Set

25mm (1") Diameter ID Dry Pressing Die Set

30mm Diameter ID Dry Pressing Die Set

40mm Diameter ID Dry Pressing Die Set

50mm Diameter ID Dry Pressing Die Set

76mm Diameter ID Dry Pressing Die Set

100mm Diameter ID Dry Pressing Die Set

Storage Boxes & Racks

<h2 data-section-id="1hv97bw" data-start="0" data-end="47">What Are Laboratory Storage Boxes and Racks?</h2>
&nbsp;
Laboratory storage boxes and racks are essential organizational systems used to store, organize, and protect cryogenic vials, microcentrifuge tubes, centrifuge tubes, and microscope slides across freezers, cold rooms, and benchtop environments. Storage boxes are typically lidded, grid-based containers used for long-term sample organization in ultra-low temperature conditions, while racks are open-frame supports used for active handling during laboratory workflows such as pipetting, vortexing, and reaction setup.
Cryogenic storage boxes are commonly designed to hold 81 vials (9&times;9 format) or 100 vials (10&times;10 format), and are compatible with storage conditions ranging from &ndash;196 &deg;C in liquid nitrogen vapor phase to +121 &deg;C for autoclave sterilization (depending on material). Tube racks, on the other hand, provide stable upright positioning of tubes during active benchwork and are not primarily intended for long-term freezer storage.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
Cryogenic storage boxes for vials and microtubes
</li>
<li dir="ltr" aria-level="1">
Freezer storage boxes for -20&deg;C and -80&deg;C applications
</li>
<li dir="ltr" aria-level="1">
PCR tube racks for 0.2 mL tubes and strips
</li>
<li dir="ltr" aria-level="1">
Microcentrifuge tube racks for 0.5 mL to 2 mL tubes
</li>
<li dir="ltr" aria-level="1">
Polypropylene (PP) autoclavable storage boxes
</li>
<li dir="ltr" aria-level="1">
Stackable storage boxes for space-saving organization
</li>
<li dir="ltr" aria-level="1">
Hinged lid storage boxes for secure sample protection
</li>
<li dir="ltr" aria-level="1">
Color-coded racks for easy sample identification
</li>
</ul>
&nbsp;
<h2 data-section-id="flyrii" data-start="1159" data-end="1199">How to Choose Storage Boxes and Racks</h2>
&nbsp;
Vial Format and Capacity
The first selection criterion is compatibility with tube size and grid layout. The most common format is the 81-place (9&times;9) box designed for 1.0&ndash;2.0 mL cryovials. Smaller or specialized formats may accommodate 5 mL tubes or different vial diameters depending on grid spacing. Proper matching ensures secure fit, easy retrieval, and consistent sample organization in high-density storage systems.
Temperature Range
Material selection determines allowable storage conditions. Polycarbonate cryogenic boxes are the most versatile, supporting temperatures from liquid nitrogen levels (&ndash;196 &deg;C) through &ndash;80 &deg;C freezer storage and up to autoclave sterilization at +121 &deg;C. Cardboard freezer boxes with moisture-resistant coating are designed for economical freezer storage and can withstand ultra-low temperatures, but they are not suitable for autoclaving or long-term moisture exposure.
Tube Rack Materials and Use
Polypropylene racks are widely used because they are autoclavable and chemically resistant, making them suitable for sterile workflows. ABS and polystyrene racks provide lower-cost alternatives for general laboratory bench use but are not designed for autoclave conditions. For freezer organization, stainless steel racks are often used to hold multiple cryoboxes within &ndash;80 &deg;C upright freezer systems, improving accessibility and spatial organization.
Slide Storage Boxes
Microscope slide storage boxes are designed to protect standard 25 &times; 75 mm slides. They are available in 25-, 50-, and 100-slide capacities. Polypropylene versions are autoclavable and suitable for sterilized workflows, while fiberboard or ABS versions are typically used for room-temperature archival storage and transport.
Color Coding and Sample Identification
Color-coded storage boxes are widely used in biobanking and high-throughput laboratories to quickly differentiate sample groups without opening boxes or reading labels at freezer temperatures. Common systems include multiple lid colors paired with alphanumeric grids inside the box, enabling precise sample tracking and retrieval in large inventories.
&nbsp;
<h2 data-section-id="1jl751w" data-start="4067" data-end="4092">Specifications Context</h2>
&nbsp;
Modern polycarbonate cryogenic storage boxes are engineered for extreme temperature stability, typically rated from &ndash;196 &deg;C to +121 &deg;C, allowing use across liquid nitrogen vapor phase storage, &ndash;80 &deg;C freezers, and autoclave sterilization cycles. Cardboard freezer boxes are coated to resist moisture ingress and are optimized for cost-efficient high-density storage in ultra-low temperature environments.
The 81-place (9&times;9 grid) polycarbonate cryobox remains the standard format in most biorepositories and clinical research facilities due to its compatibility with SBS footprint freezer systems and automated inventory tracking workflows. These systems are widely used in genomics, cell banking, and pharmaceutical research environments.
For product details, specifications, or bulk ordering support, <a href="https://mbpinc.net/contact-us">the MBP team can help you</a> choose the right storage solution for your laboratory needs.

Drying Racks

600213 by Globe Scientific is a 72-place wall-mountable laboratory drying rack in HIPS with removable pegs (≥15 mm neck bore), 11 small pegs, seamless drip channel, drainage hose, and mounting kit included.

Drying Rack, 72 Place, Removable Pegs, High Impact Polystyrene

Extra Pegs for Drying Rack, Small Diameter, 11/pack

Vacuum Pump

<h2>What are laboratory vacuum pumps?</h2>
&nbsp;
Laboratory vacuum pumps are instruments that remove gas from a connected vessel or system to create sub-atmospheric pressure for applications including rotary evaporation of solvents, vacuum filtration through B&uuml;chner funnels and membranes, SpeedVac centrifugal concentration, gel drying, lyophilization rough vacuum, and degassing of solvents and solutions. MBP carries vacuum pumps from Vacuubrand, Welch, and ULVAC, which together cover the full range of laboratory vacuum needs from moderate filtration vacuum to deep vacuum for turbomolecular backing, available in oil-free diaphragm and oil-sealed rotary vane configurations.
&nbsp;
<h2>What you will find:</h2>
&nbsp;
<ul style="list-style-type: disc;">
<li dir="ltr"><a href="https://mbpinc.net/equipments/sample-processing/pumps/vaccum-pumps/edwards-pumps" style="color: #236fa1;">Edwards Pumps: </a>Reliability at its best &ndash; with strong vacuum pumps that are made to work for high-performing industrial and research purposes.</li>
<li dir="ltr"><a href="https://mbpinc.net/equipments/sample-processing/pumps/vaccum-pumps/agilent-pumps" style="color: #236fa1;">Agilent Pumps: </a>Get the most out of high vacuum pumps engineered for mass spectrometry, leak testing, and other advanced lab methods.</li>
<li dir="ltr"><a href="https://mbpinc.net/equipments/sample-processing/pumps/vaccum-pumps/vacuubrand-pumps">Vacuubrand Pumps: </a>Take advantage of German-engineered diaphragm pumps and vacuum control devices that are resistant to chemical agents and easy to maintain.</li>
<li dir="ltr"><a href="https://mbpinc.net/equipments/sample-processing/pumps/vaccum-pumps/welch-pumps">Welch Pumps: </a>Perfect for all your routine lab procedures using vacuum pumps made with quality materials for durability and versatility.</li>
<li dir="ltr"><a href="https://mbpinc.net/equipments/sample-processing/pumps/vaccum-pumps/ulvac-pumps" style="color: #236fa1;">ULVAC Pumps:</a> Use proven Japanese vacuum technology renowned for reliable and effective operations in manufacturing and thin-film production.</li>
<li dir="ltr"><a href="https://mbpinc.net/equipments/sample-processing/pumps/vaccum-pumps/vaccum-pump-accessories" style="color: #236fa1;">Vacuum Pump Accessories:</a> Boost your system&rsquo;s capabilities with oil mist filters, traps, and other accessories to optimize pump performance.</li>
</ul>
&nbsp;
<h2>How to choose between vacuum pump brands and types</h2>
&nbsp;
Choose Vacuubrand for premium PTFE diaphragm and chemistry vacuum systems
Vacuubrand diaphragm pumps are known for their high-quality PTFE-wetted construction, precise chemistry vacuum control systems with automatic set-point regulation, and a broad range of configurations from single-stage to two-stage models, making them the preferred brand for demanding rotary evaporation and concentration applications where reproducible vacuum control is important.
Choose Welch for reliable, cost-effective diaphragm and corrosion-resistant vacuum
Welch (by Gardner Denver) diaphragm pumps offer solid performance for routine filtration and moderate vacuum applications at a competitive price point, with the Dryfast ULTRA series as their flagship oil-free, chemically resistant product line covering most common laboratory vacuum needs.
Choose ULVAC for applications requiring deeper vacuum
ULVAC rotary vane oil-sealed pumps achieve deeper ultimate vacuum levels than oil-free diaphragm pumps, making them appropriate for applications like thin-film deposition, high-vacuum instruments, manifold vacuum systems, or backing turbomolecular pumps, where vacuum levels below 1 mbar are required.
Check the accessories catalog for vacuum tubing, traps, and gauges
Accessories include cold traps and chemical traps to protect pumps from solvent and corrosive vapors, vacuum tubing (rubber, silicone, or PTFE), and vacuum gauges and controllers for monitoring and regulating applied vacuum.
Match ultimate vacuum and pumping speed to your application requirements
Ultimate vacuum determines the lowest pressure achievable, while pumping speed determines how quickly the system reaches and maintains that vacuum. Both must be matched to system volume and gas load from evaporation, filtration, or outgassing.
&nbsp;
<h2>Specifications context</h2>
&nbsp;
The choice between oil-free diaphragm and oil-sealed rotary vane pumps is primarily determined by required ultimate vacuum and chemical exposure. Diaphragm pumps provide oil-free, low-maintenance vacuum suitable for most chemistry and biology applications above ~1&ndash;5 mbar, while rotary vane pumps achieve deeper vacuum but require oil changes and carry contamination risk.
As of 2026, oil-free diaphragm pumps from Vacuubrand and Welch cover most standard molecular biology and chemistry vacuum applications, while ULVAC rotary vane and dry pumps serve specialized deep-vacuum requirements.
Do you need any assistance figuring out your displacement or pressure requirements? Our experts at MBP are here to help. <a href="https://mbpinc.net/contact-us">Contact us for a customized quote.</a>

Vaccum Pump

Dual Diaphragm Rebuild Kit for ULVAC DTC-41 1.6 cfm Pumps

The DTC-41-Kit by Across International is a complete dual-diaphragm rebuild kit for the ULVAC DTC-41 1.6 CFM dual-stage chemical-duty vacuum pump. Includes 2 diaphragms, 3 Valve A, 2 Valve B, 4 O-Rings S-28, 2 O-Rings P-10A, 4 O-Rings AS568-110, and a bill of materials — a full service kit in one part number. Order from MBP with direct specialist support.

Dual Diaphragm Rebuild Kit for ULVAC UDP 6 cfm Pumps

The UDP6-Kit by Across International is a complete dual-diaphragm rebuild kit for ULVAC UDP-6 6 CFM chemical-duty vacuum pumps. Includes 2 diaphragms, 2 head cover gaskets, 4 valves, 4 O-Rings N-15, 2 O-Rings P-18, and a bill of materials — everything needed to service both pump heads in a single procedure. Order from MBP with direct specialist support.

<h2 data-section-id="b4wzzk" data-start="0" data-end="47">What is bacterial culture media for cloning?</h2>
&nbsp;
Bacterial culture media for cloning workflows includes LB (Luria-Bertani) broth and agar, the standard general-purpose media for E. coli growth, SOC media used for post-transformation recovery, and Terrific Broth for higher-density culture in plasmid preparation. Pre-made agar plates with antibiotic selection (ampicillin, kanamycin, chloramphenicol, and others matching common selection markers) are used to isolate colonies carrying the desired plasmid. Related entities include antibiotic selection markers matching transformation kit resistance genes, post-transformation recovery time, and plasmid yield scaling with culture volume and media richness.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" role="presentation">ZymoBroth Growth Media for efficient transformation workflows to generate highly competent bacterial cells</li>
<li dir="ltr" role="presentation">Overexpression Broth (OB) optimized for increasing recombinant protein yields with high-density nutrient media.</li>
<li dir="ltr" role="presentation">Expansion Broth (EB) for the faster and more reliable expansion of microbial cultures.</li>
<li dir="ltr" role="presentation">Dual Media Sets for integrated growth and induction workflows with the help of combined EB and OB systems</li>
</ul>
&nbsp;
<h2 data-section-id="9xi4x5" data-start="919" data-end="971">How to choose bacterial culture media for cloning</h2>
&nbsp;
LB broth/agar vs. Terrific Broth
LB broth and agar are the standard general-purpose media for routine cloning, colony selection, and small-scale plasmid preparation, while Terrific Broth provides higher nutrient density supporting higher bacterial cell density, making it useful when maximizing plasmid yield in larger-scale preparations.
SOC media for post-transformation recovery
SOC media is richer than standard LB and supplemented with glucose and magnesium. It is commonly used for a brief recovery incubation immediately after heat-shock or electroporation transformation, helping transformed cells recover before plating on selective agar. Some transformation protocols specifically recommend SOC rather than LB for this recovery step.
Antibiotic selection matching
Pre-made antibiotic-selective agar plates must match the resistance marker carried by the transformed plasmid, whether ampicillin, kanamycin, chloramphenicol, or another selection marker. Using the wrong antibiotic&mdash;or no antibiotic at all&mdash;will not properly select for plasmid-containing colonies and may allow unwanted bacterial growth.
Liquid vs. agar plate formats and shelf life
Liquid media (broth) is used for post-transformation recovery and culture scale-up, while agar plates are used for colony isolation and selection. Pre-made antibiotic plates have a defined shelf life because antibiotics gradually lose activity over time, making expiration dates particularly important for antibiotics with lower stability.
&nbsp;
<h2 data-section-id="1fljvas" data-start="3523" data-end="3548">Specifications context</h2>
&nbsp;
LB broth and agar are formulated with defined concentrations of tryptone, yeast extract, and sodium chloride, with agar plates commonly supplied in standard Petri dish sizes (for example, 100 mm) and containing antibiotic concentrations matched to common resistance markers, such as 100 &micro;g/mL ampicillin or 50 &micro;g/mL kanamycin. SOC recovery is typically performed as a short incubation, often around one hour at 37&deg;C with shaking, before plating cells on selective agar.&nbsp;
This sub-category is part of MBP's cloning catalog alongside transformation kits and competent cells, the immediately preceding step, and chemicals/reagents for enzyme-based fragment preparation. Labs scaling up plasmid production for lentivirus packaging in immortalization workflows can also review MBP's cell immortalization catalog. MBP's specialist team can help confirm antibiotic concentration and media format requirements for a specific selection marker before order placement.
<a href="https://mbpinc.net/contact-us">Contact the expert team</a> at MBP today to request a quote for high-quality culture media.

Culture Media

M3011 - MSDS

Protocol

M3011-Protocol

Dual Media Set™ (100 ml EB™ & 500 ml OB™)

M3011 by Zymo Research is the Dual Media Set™ — Expansion Broth (EB™, 100 mL) plus Overexpression Broth (OB™, 500 mL) — for high-yield E. coli recombinant protein expression using a two-phase workflow that eliminates IPTG induction and OD monitoring in T7-based systems.

Product Storage

Shipping Condition

Storage Condition

Test Tubes

<h2 dir="ltr">What are Test Tubes?</h2>
 Test tubes for laboratory use are open-ended, cylindrical glass or plastic tubes used to hold, mix, incubate, and heat liquid and solid samples across a broad range of applications: bacteriological culture, tissue culture, clinical chemistry, serological assays, immunology, and general sample processing. Choose borosilicate glass for reusable, high-temperature, or chemically demanding applications; choose polystyrene disposable 12&times;75 mm tubes for flow cytometry and colorimetric assays; choose polypropylene capped tubes for microbial culture with anaerobic or gas-generating organisms.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" aria-level="1">Glass test tubes in diverse formats for heating and chemical reaction workflows</li>
<li dir="ltr" aria-level="1">
Plastic polypropylene test tubes for routine laboratory use
</li>
<li dir="ltr" aria-level="1">
Graduated tubes for quick and easy volume estimation
</li>
<li dir="ltr" aria-level="1">
Conical and round-bottom tube formats for different applications
</li>
<li dir="ltr" aria-level="1">
Sterile disposable test tubes for clinical and diagnostic work
</li>
<li dir="ltr" aria-level="1">
Heat-resistant tubes for incubation and controlled heating steps
</li>
</ul>
&nbsp;
<h2 dir="ltr">How to Choose Test Tubes</h2>
 Material: Glass vs. Polypropylene vs. Polystyrene Borosilicate glass 3.3 (ASTM E438 Type I, Class B) test tubes withstand direct flame, autoclave sterilization at 121 &deg;C, and most solvents, acids, and bases. They are reusable and autoclavable, making them cost-effective over high-volume laboratory runs. Polystyrene (PS) disposable tubes offer outstanding optical clarity for flow cytometry (FACS), cell counting, and OD-based colorimetric assays, but cannot be autoclaved and should not be used with aromatic solvents or strong acids. Polypropylene (PP) tubes are chemically resistant, autoclavable, and available with screw caps for anaerobic culture or gas-generating reactions. Rimmed vs. Rimless Rimless test tubes (fire-polished ends) allow easier insertion of rubber or silicone stoppers and are preferred for plugging with cotton wool for microbial culture. Rimmed tubes have a flared lip that facilitates pouring and is compatible with spring-metal tube closures. Confirm your closure type before ordering in bulk. Size and Volume The most common test tube dimensions in clinical and research labs: 12&times;75 mm: ~5 mL capacity; standard for flow cytometry, FACS, serology 13&times;100 mm: ~10 mL; general culture and chemistry 16&times;100 mm: ~14 mL; culture and chemistry 16&times;125 mm: ~17 mL; microbiological culture 18&times;150 mm: ~25 mL; larger-volume digests and culture Wall thickness of 1.2 mm (light wall, borosilicate 3.3) is the standard for general lab use; heavy-wall versions are used for digestions and applications involving vacuum or pressure. Sterile vs. Non-Sterile Sterile borosilicate glass culture tubes (individually wrapped or bulk-sterilized) are required for microbial culture, cell culture, and any application where contamination would invalidate the result. Non-sterile tubes are adequate for chemistry, spectroscopy, and other abiotic applications. Disposable PS tubes from Corning (PYREX&trade;) and Globe Scientific are supplied sterile or non-sterile; confirm the specification on the lot certificate. 
<h2 dir="ltr"> Specifications Context</h2>
 Borosilicate glass 3.3 test tubes have a linear thermal expansion coefficient of 3.3 &times; 10⁻⁶ K⁻&sup1;, providing resistance to thermal shock from room temperature to 300 &deg;C (direct flame) and from 0 to 121 &deg;C (autoclave cycles). Light-wall tubes (1.2 mm uniform wall thickness) provide the standard for general laboratory use; heavy-wall variants (2.0 mm) are used for digestion vessels and pressurized applications. Corning PYREX&trade; disposable round-bottom rimless glass tubes for tissue culture conform to ASTM standards and are the reference format for bacteriological serology and cell wash procedures. MBP supplies Globe Scientific and NEST Scientific test tube lines for research and clinical labs across the USA, Canada, and worldwide. &nbsp; 
If you&rsquo;re choosing between glass and plastic or trying to match the right size to your workflow, it&rsquo;s worth getting that part right early &mdash; it makes everything downstream smoother and a lot less messy. <a href="https://mbpinc.net/contact-us">Contact the MBP team now!</a>

118118-Tubes, Caps & Racks Catalog

118118-Lab Supplies for Physicians Offices

Dual Position Snap Cap

Globe Scientific 118118 — 17 mm LDPE dual-position snap cap, ribbed for grip, with a loose (aerobic/gas-permeable) and sealed (anaerobic/leak-resistant) position. Compatible with 17 mm diameter culture tubes including Globe Scientific 110158. 1,000 caps per unit (500/bag × 2 bags).

Cap, Snap, 17mm, Dual Position, LDPE, Bag/1000, 5 bags/case

Cap, Snap, 12mm, Dual Position, LDPE, Bag/1000, 20 bags/case

<h2>What Are Rotary Evaporators?</h2>
&nbsp;
A rotary evaporator (commonly called a rotovap or rotavapor) is a laboratory instrument that removes solvent from a liquid sample through evaporation under reduced pressure. A round-bottom flask containing the sample is immersed partially in a heated bath and rotated, continuously coating the inner surface with a thin film of liquid. This thin film dramatically increases the evaporation surface area while the rotation prevents localized overheating. Vacuum applied through the system lowers the boiling point of the solvent by 30 to 80 degrees C compared to atmospheric pressure, allowing gentle removal without degrading heat-sensitive target compounds. Solvent vapors travel through a vapor duct to a condenser, where they are cooled and collected as condensate for recovery or disposal. The concentrated or dried sample remains in the evaporation flask. Common solvents removed include ethanol, methanol, ethyl acetate, dichloromethane, hexane, acetone, and toluene. A rotary evaporator is the right instrument when you need to remove a volatile solvent from a dissolved or extracted compound on a 1-L to 50 L batch scale; it is faster, gentler, and more solvent-efficient than open evaporation or distillation.
&nbsp;
<h2 dir="ltr">What You Will Find:</h2>
&nbsp;
<ul>
<li data-section-id="187qfsp" data-start="25" data-end="166">Motorized Lift Rotary Evaporators: Ai SolventVap rotary evaporators with motorized lift for efficient solvent evaporation and recovery.</li>
<li data-section-id="b917ud" data-start="168" data-end="335">Rotary Evaporators with Cold Trap: Ai SolventVap systems featuring an electric lift and cold trap condenser to improve solvent collection and vacuum performance.</li>
<li data-section-id="n7wwro" data-start="337" data-end="484">Dual Receiving Flask Kits: Optional dual receiving flask assemblies for uninterrupted solvent collection during rotary evaporation workflows.</li>
<li data-section-id="163r8pz" data-start="486" data-end="637" data-is-last-node="">Replacement Heating Elements: Heating elements designed for compatible Ai SolventVap rotary evaporators to maintain reliable heating performance.</li>
</ul>
&nbsp;
<h2>How to Choose a Rotary Evaporator</h2>
&nbsp;
Flask size
Flask size is the primary sizing decision. For standard research synthesis and extraction labs, 2 L to 5 L systems handle most batch sizes. Choose a flask that accommodates 50 to 70% of your typical batch volume; overfilling causes bumping and carryover into the condensate. Larger 10 L, 20 L, and 50 L rotary evaporators are used for scale-up and extraction pilot runs. Confirm that the heating bath is sized appropriately for the chosen flask; a 20 L flask in a 5 L bath will not heat efficiently.
Condenser configuration
Vertical (coil-type) condensers provide high condensation surface area and are effective for high-boiling or slowly condensing solvents. Inclined (diagonal) condensers are the traditional rotovap configuration, providing good condensate flow to the receiver and compatibility with high-throughput solvent removal. Dry ice or cold-water condensers are used for low-boiling, highly volatile solvents (diethyl ether, pentane) requiring condenser temperatures well below 0 degrees C. Match condenser type and coolant temperature to the solvent being evaporated.
Vacuum control
Manual vacuum control (needle valve) is adequate for routine single-solvent applications. Automated vacuum controllers with digital setpoint and feedback control maintain a stable vacuum at the evaporation setpoint, preventing bumping and enabling programmed ramp-down vacuum protocols for multi-solvent samples. For regulated environments or high-throughput labs, automated vacuum control reduces solvent loss and operator attention time.
Water bath temperature range
Standard water baths reach 95 degrees C and are adequate for aqueous, alcoholic, and most organic solvent removal at moderate vacuum. For high-boiling solvents (DMSO: bp 189 degrees C; DMF: bp 153 degrees C), oil baths reaching 180 degrees C and a deeper vacuum (1 to 5 mbar with a rotary vane pump) are required. Confirm bath compatibility with the heat transfer fluid: water for temperatures to 95 degrees C; food-grade or synthetic oil for higher temperatures.
Cold trap requirement
A cold trap between the rotary evaporator and the vacuum pump is not optional; it is essential. Without a cold trap, solvent vapors contaminate pump oil, raising ultimate pressure and shortening pump life. A cold trap cooled to -20 degrees C to -40 degrees C (using a mechanical chiller) captures the vast majority of solvent vapor for the most common solvents. For highly volatile solvents (diethyl ether, pentane), a dry-ice trap at -78 degrees C may be required.
&nbsp;
<h2>Specifications Context</h2>
&nbsp;
Evaporation rate is commonly specified in L/h for ethanol at a standard bath temperature and vacuum; use this as a relative performance indicator, not as an absolute rate for other solvents. Evaporation rates for dichloromethane, acetone, and ethyl acetate differ from those of ethanol at the same vacuum and temperature. Confirm that the drive motor seal (the rotating joint between the flask and the vapor duct) is rated for the full vacuum range of your pump. Worn drive seals are the most common cause of vacuum loss in rotary evaporators in regular use; replacement seals are available and should be kept in stock.&nbsp;
&nbsp;
Ready to upgrade your solvent recovery? Explore our full range of rotary evaporators and <a href="https://mbpinc.net/contact-us">reach out to the MBP team</a> for a friendly quote today.

Rotary Evaporators

Ai dual receiving flask bridge with two PTFE open/close valves

Ai 35# QuickClamp set x 3, 50# QuickClamp set x 2

Receiving flask glass vacuum port with PTFE open/close valve

Receiving flask glass drain port with PTFE open/close valve

Rubber-wrapped 10L receiving flask support
Straight support length: 25 inches, diameter: 8.75 inches
Angled support length: 22 inches, diameter: 8.75 inches

SE53-DR Standard Package

Ai 35# QuickClamp set x 3, 60# QuickClamp set x 2

Rubber-wrapped 20L receiving flask supports
Straight support length: 20.25 inches, diameter: 13 inches
Angled support length: 24.5 inches, diameter: 13 inches

SE130-DR Standard Package

Dual Receiving Flask Kit for Ai SolventVap Rotary Evaporator

The Ai dual receiving flask kit allows you to switch between two receiving flasks, without interrupting your rotary evaporator’s operation.\r\n\r

Dual Receiving Flask Kit for Ai SolventVap 20L Rotary Evaporator

Dual Receiving Flask Kit for Ai SolventVap 50L Rotary Evaporator

<h2 data-section-id="185nm5c" data-start="0" data-end="38">What is classic cell culture media?</h2>
&nbsp;
Classic cell culture media refers to the foundational basal medium formulations that have underpinned mammalian cell culture for decades, including DMEM (Dulbecco's Modified Eagle Medium), MEM (Minimum Essential Medium), RPMI 1640, Ham's F-10, Ham's F-12, IMDM (Iscove's Modified Dulbecco's Medium), and DMEM/F-12. These media provide the amino acids, vitamins, glucose, salts, buffering agents, and other nutrients required to support cell survival and growth in vitro. They form the basis of many modern specialized, serum-free, and advanced media formulations used in academic research, biotechnology, pharmaceutical development, and biomanufacturing.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" aria-level="1">
&nbsp;Availability of both low and high carbohydrate levels of balanced basal formulations for the distinct metabolic requirements of diverse mammalian cell lines.
</li>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" aria-level="1">
Maintenance of precise physiological pH during long-term incubation cycles using optimized buffering configurations with integrated chemical stabilizers&nbsp;
</li>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" aria-level="1">
Nutrient-dense cell media supplemented with vitamins and essential amino acids to support&nbsp; hybridomas and rapidly proliferating continuous cultures
</li>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" aria-level="1">
Optimized serum reduction along with enhanced cell attachment using&nbsp;Multi-purpose 1:1 formulation hybrids&nbsp;
</li>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" aria-level="1">
Salt solutions supplemented with essential minerals to facilitate enzyme preparation, cell washing, and reliable short-term osmotic maintenance.
</li>
</ul>
&nbsp;
<h2 data-section-id="1blio5n" data-start="931" data-end="964">How to choose a classic medium</h2>
&nbsp;
DMEM vs MEM
DMEM contains up to four times the amino acids and vitamins found in MEM, along with higher glucose concentrations, making it suitable for cell types with elevated nutrient demands. It is widely used for primary cells, stem cells, and many transformed mammalian cell lines. MEM, based on the original Eagle's formulation, remains a common choice for standard monolayer culture and is available with different salt formulations to support various applications.
RPMI 1640 for suspension and hematopoietic culture
RPMI 1640 was originally developed for culturing human leukemic cells and remains the preferred medium for lymphocytes, hybridomas, and other hematopoietic cell types. Its formulation includes glutathione and elevated levels of biotin, vitamin B12, and PABA. Although designed for suspension cultures, RPMI 1640 also supports a wide range of adherent cell lines when appropriately supplemented.
Ham's F-10/F-12 for CHO and specialized applications
Ham's nutrient mixtures were developed for CHO cells and other specialized cell types. Their formulations include additional nutrients such as zinc, putrescine, hypoxanthine, and thymidine, making them useful for hepatocyte culture, toxicity testing, viral fusion studies, and other specialized applications. These media can be used with or without serum depending on the experimental requirements.
DMEM/F-12 for complex, rich-medium applications
DMEM/F-12 combines the nutrient-rich composition of DMEM with the specialized components found in Ham's F-12. The resulting formulation supports demanding cell types including MDCK cells, glial cells, fibroblasts, and endothelial cells. It is also widely used as the foundation for many serum-free and advanced culture systems.
IMDM for high-density rapid proliferation
IMDM is an enriched derivative of DMEM that contains additional amino acids, vitamins, HEPES buffer, sodium pyruvate, and potassium nitrate. Its enhanced nutrient profile makes it particularly suitable for rapidly proliferating and high-density cultures such as Jurkat cells, COS-7 cells, and macrophages.
Liquid vs powder format
Liquid classic media are supplied ready for use after the addition of serum and required supplements. Powdered media offer lower shipping costs and greater flexibility for high-volume laboratories but require reconstitution, sodium bicarbonate addition, and sterile filtration before use.
&nbsp;
<h2 data-section-id="1fljvas" data-start="4382" data-end="4407">Specifications context</h2>
&nbsp;
Classic media are manufactured according to their original published formulations, with only stability-related modifications where necessary. Most liquid formulations contain sodium bicarbonate as the primary buffering system and require incubation in a 5&ndash;10% CO₂ atmosphere to maintain physiological pH. Powdered formulations require reconstitution, sodium bicarbonate supplementation, and sterile filtration before use.
As of 2026, DMEM, DMEM/F-12, and RPMI 1640 remain the most widely used classic cell culture media across academic, biotechnology, pharmaceutical, and biomanufacturing laboratories. IMDM continues to gain popularity for high-density culture and bioprocessing applications.
For recombinant growth factors and cytokines used alongside classic media, see Recombinant Proteins. For supplementation reagents such as GlutaMAX, NEAA, sodium pyruvate, and HEPES, see Cell Culture Supplements &amp; Additives. Browse Mammalian Cell Culture for the broader category.
<a href="https://mbpinc.net/contact-us">Contact the expert team</a> at MBP today and get optimized classic media for your lab.

Classic Media

Dulbecco's Modified Eagle Medium (DMEM), High Glucose

Unit Quantity

Sterility

Appearance

Disclaimer

Caution

Dulbecco's Modified Eagle Medium (DMEM), Low Glucose

<h2>What are methylation standards?</h2>
&nbsp;
Methylation standards are defined reference DNA materials with a known and confirmed methylation status, ranging from a fully methylated DNA (where every cytosine at CpG or other sites carries a methyl group) to a fully unmethylated DNA (where no cytosines are methylated) and intermediate or mixed standards containing a defined ratio of the two. The most widely used unmethylated control in bisulfite sequencing is lambda phage DNA, which is naturally unmethylated and can be spiked into a conversion reaction to estimate conversion efficiency.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" role="presentation">Methylated and non-methylated DNA control sets for comparative epigenetic analysis and assay validation</li>
<li dir="ltr" role="presentation">Universal methylated DNA standards for methylation assessment workflows</li>
<li dir="ltr" role="presentation">Genomic DNA reference materials: for microbial and human methylation studies</li>
<li dir="ltr" role="presentation">Matched DNA sets: used in experimental models for controlled comparison of methylation status&nbsp;</li>
<li dir="ltr" role="presentation">Bisulfite-converted DNA standards: for downstream sequencing-based methylation and PCR analysis</li>
<li dir="ltr" role="presentation">Methylation spike-in controls: for sequencing normalization and high-throughput workflows</li>
<li dir="ltr" role="presentation">Mouse and human DNA methylation reference sets: for specific species epigenetic studies</li>
<li dir="ltr" role="presentation">Methylated DNA IP control kits for methylation assays involving immunoprecipitation</li>
</ul>
&nbsp;
<h2>How to use methylation standards</h2>
&nbsp;
Spike an unmethylated control into every bisulfite or enzymatic conversion reaction
Running an unmethylated DNA like lambda phage DNA alongside your samples in the same conversion reaction estimates the conversion efficiency of that specific run, since every remaining cytosine signal after conversion should be treated as a false positive, and this rate can be quantified and accounted for in downstream analysis.
Run a fully methylated positive control to confirm methylated cytosines are preserved
A fully methylated standard, such as DNA synthesized with 5-methyl-dCTP or commercially prepared methylated genomic DNA, confirms your conversion workflow correctly preserves methylated cytosines intact rather than inadvertently converting them, which would produce false-negative methylation calls.
Use a mixed or intermediate standard to calibrate quantitative methylation assays
A standard containing a defined ratio of methylated to unmethylated DNA, or a set of standards spanning a range of methylation percentages, provides a calibration curve for quantitative methylation assays like 5-methylcytosine ELISA, validating that the assay reports the expected methylation level across its full dynamic range.
Confirm standard stability before long-term storage or lot-to-lot use
Methylation control DNA has documented stability windows, and confirming that your standard's methylation status is stable under storage conditions, and consistent across lots, is necessary for reliable longitudinal monitoring of conversion efficiency.
Use standards to monitor workflow consistency over time
Running a conversion control in every batch allows longitudinal tracking of conversion efficiency across instrument runs, reagent lots, and protocol variations, helping catch workflow drift before it affects real sample results.
&nbsp;
<h2>Specifications context</h2>
&nbsp;
Lambda phage DNA is the most commonly used unmethylated bisulfite conversion control because it is naturally unmethylated, commercially available, and well characterized, and it can be aligned to the known lambda phage reference genome after sequencing to calculate residual unconverted cytosine rates, providing a direct, interpretable measure of conversion efficiency. As of 2026, fully methylated and fully unmethylated standard sets are also used alongside enzymatic methyl-seq conversions to confirm that EM-seq's enzymatic mechanism correctly protects methylated cytosines and converts unmethylated ones, independent of the conversion chemistry used.
This category sits within DNA/RNA Methylation, alongside Bisulfite Conversion Kits, Non-Bisulfite Kits &amp; Reagents, and ELISA Kits &amp; Reagents. See the full reagents catalog and use Quick Order for recurring orders.
<a href="https://mbpinc.net/contact-us">Contact the expert team of Molecular Biology Products Inc. (MBP)</a> to get high-quality methylation standards for your lab today.

Methylation Standards

MSDS

E. coli Non-Methylated Genomic DNA (5 µg/20 µl)

D5016 by Zymo Research is 5 µg (250 ng/µL, 20 µL) of fully unmethylated E. coli genomic DNA from Dam–/Dcm– strain ER2925, in TE buffer (10 mM Tris-HCl, 1 mM EDTA, pH 8.0). Used as a negative control or bisulfite conversion efficiency spike-in in WGBS, RRBS, MSP, and epigenetic array workflows. Store at ≤–20°C.