Brands

<h2>What are Welch vacuum pumps?</h2>
&nbsp;
Across International is an American laboratory vacuum pump brand offering oil-free diaphragm and corrosion-resistant pumps for routine laboratory vacuum applications. Its specialized series is the flagship line, designed for chemical resistance and reliable performance in standard lab workflows.
&nbsp;
<h2>What you will find: </h2>
&nbsp;
<ul>
<li data-path-to-node="1,0,0">Corrosion-resistant, two-stage belt-driven systems specifically engineered to handle aggressive chemical vapors and highly corrosive gases.</li>
<li data-path-to-node="1,1,0">Heavy-duty vacuum systems equipped with explosion-proof motors to ensure safe operation in hazardous environments containing flammable vapors.</li>
<li data-path-to-node="1,2,0">Fully chemical-resistant, four-head diaphragm configurations designed to provide high-flow, oil-free vacuum performance for harsh solvent evaporations.</li>
<li data-path-to-node="1,3,0">Rugged, dual-stage oil-sealed pumps utilizing a reliable belt-drive mechanism to deliver deep, stable high-vacuum levels.</li>
<li data-path-to-node="1,4,0">Original equipment service kits packed with essential replacement parts to maintain optimum sealing and extend diaphragm operational life.</li>
<li data-path-to-node="1,5,0">Air-cooled diffusion systems engineered to boost vacuum throughput and achieve ultra-high vacuum ranges for specialized industrial or physics applications.</li>
<li data-path-to-node="1,6,0">Two-head, oil-free chemical duty pumps utilizing advanced dry technology to ensure clean, low-maintenance laboratory vacuums.</li>
</ul>
&nbsp;
<h2>How to choose a Welch vacuum pump</h2>
&nbsp;
Choose the Dryfast ULTRA series for oil-free chemical vacuum
The Dryfast ULTRA series provides PTFE-wetted, oil-free vacuum pumps suitable for routine chemistry and biology applications. Single-stage models are used for filtration, while two-stage models support deeper vacuum for rotary evaporation and concentration.
Choose the CRV Pro series for aggressive chemical resistance
The CRV Pro series is designed for highly corrosive environments, including strong acids and halogenated solvents, offering enhanced material resistance compared with standard diaphragm pump construction.
Confirm ultimate vacuum requirements
Single-stage Welch pumps typically reach ~50&ndash;100 mbar for filtration, while two-stage models achieve ~3&ndash;7 mbar for rotary evaporation and SpeedVac applications. Model selection should match the required vacuum level.
Consider control requirements
Most Welch pumps are used as standalone systems, but they can also be paired with external vacuum controllers for set-point regulation when more precise control is required.
Check noise and installation requirements
Noise levels vary by model, so specifications should be reviewed for bench placement or enclosed operation. Exhaust routing and ventilation should also be considered during setup.
&nbsp;
<h2>Specifications context</h2>
&nbsp;
Welch Dryfast pumps are designed for continuous operation with thermal protection that shuts down the motor under overheating conditions and restarts after cooling. They are widely used in North American laboratories due to their balance of cost, reliability, and chemical resistance.
As of 2026, Welch Dryfast ULTRA pumps remain a standard choice for oil-free diaphragm vacuum applications in research and analytical labs.
The MBP team is here to help&mdash;<a href="https://mbpinc.net/contact-us">reach out today for a personalized quote</a>.

Welch Pumps

Welch DryFast 2-Head Diaphragm Chemical Duty Pump

Vacuum Filtration

Welch 2034 chemical-resistant oil-free diaphragm pump

White premium food-grade silicone vacuum hose

Welch 2034 Chemical-Resistant Oil-Free Diaphragm Pump Standard Package

Welch 2047 chemical-resistant oil-free diaphragm pump

White premium food grade silicone vacuum hose

Welch 2047 Chemical-Resistant Oil-Free Diaphragm Pump Standard Package

Welch DryFast PTFE Diaphragm Vacuum Pumps enable precise vacuum control for organic evaporations with exclusive Advanced Vapor Management (AVM). Oil-Free, portable, chemical resistant, 2 head diaphragm design simplifies maintenance. Economical DryFast vacuum pumps are perfect for tough lab applications.

Manufacturer

Welch 2034 0.9 cfm DryFast 2-Head Diaphragm Chemical Duty Pump

Welch 2047 2.5 cfm DryFast 2-Head Diaphragm Chemical Duty Pump

Vacuum Pump 1

Vacuum Pump 2

Welch 2052 2.3 cfm full chemical-resistant oil-free diaphragm pump

White premium food grade silicone vacuum hose (3 ft)

Welch 2052 Chemical-Resistant Oil-Free Diaphragm Pump Standard Package

12 mm diameter EDPM O-ring (Welch PN 829217-3)

Welch 2163 8-Head Diaphragm Pump Standard Package

Welch Full Chemical-Resistant 4-Head Diaphragm Pump

The Welch 2052 and Welch 2163 are high-performance, full chemical-resistant, oil-free dry diaphragm vacuum pumps, designed for demanding laboratory applications. Both models feature all-PTFE contact surfaces (Welch 2052) and all-aluminum contact surfaces (Welch 2163), ensuring excellent chemical resistance and deep vacuum capability. These pumps are portable, require less maintenance, and eliminate the need for frequent and costly oil changes, preventing cross-contamination.

Welch 2052 2.3 cfm Full Chemical-Resistant 4-Head Diaphragm Pump

Welch 2163 6.1 cfm Full Chemical-Resistant 8-Head Diaphragm Pump

KF-50 Clamp and Centering Ring (Mounted On Unit)

KF-25 Clamp and Centering Ring (Mounted On Unit)

Welch ProBoost Air-Cooled Diffusion Pump Standard Package

Welch ProBoost Air-Cooled Diffusion Pump

The Welch ProBoost is an air-cooled gas jet (diffusion) pump designed for high-vacuum applications. It operates without internal moving parts, using boiling silicone vapors to create a gas jet. Backed by a rotary vane pump, ProBoost can achieve vacuum pressures as low as 0.00002 torr, significantly improving reaction results with air-sensitive compounds like organometallics and hydrides. It features a built-in control board for the fan and heater, ensuring efficient cooling after operation.\n\n\n\n

Model

 Electrical requirements

Ultimate vacuum pressure

Minimum back pump FAD at 60Hz

Maximum discharge pressure

Ambient environment temp

Heat-up time

Cool down time

Silicone oil capacity

Inlet connection

Discharge connection

Unit weight

Transfer Pipettes

<h2>What are disposable transfer pipettes?</h2>
&nbsp;
Disposable transfer pipettes are single-use plastic liquid-handling tools made from low-density polyethylene (LDPE). They are designed as a one-piece bulb-and-stem system used for transferring, dispensing, and handling small volumes of liquids in laboratory workflows.
They are commonly used as a safer and more convenient alternative to glass Pasteur pipettes. Being plastic and disposable, they eliminate the risk of breakage, reduce cross-contamination, and remove the need for separate rubber bulbs. The flexible bulb allows controlled aspiration and dispensing of reagents, samples, and solutions.
&nbsp;
<h2>What you will find:</h2>
&nbsp;
<ul>
<li>Graduated transfer pipettes &ndash; for approximate volume measurement and controlled dispensing</li>
<li>Non-graduated transfer pipettes &ndash; for simple liquid transfer without measurement markings</li>
<li>Fine-tip transfer pipettes &ndash; for small droplets and precise spot dispensing</li>
<li>Sterile transfer pipettes &ndash; for microbiology and contamination-sensitive workflows</li>
<li>Non-sterile transfer pipettes &ndash; for routine laboratory use</li>
<li>Disposable Pasteur pipettes &ndash; for general single-use liquid handling</li>
</ul>
&nbsp;
<h2>How to choose transfer pipettes</h2>
&nbsp;
Tip style Fine-tip pipettes are used for precise work such as microplate spotting and small-volume handling. Standard tips are suitable for general transfers, while wide-bore designs are better for viscous liquids or blood samples. Longer stems help access deep containers.
Capacity and volume handling Select pipettes based on typical working volumes. Smaller pipettes are suitable for low-volume transfers, while larger ones are used for routine sample handling. The effective draw volume depends on bulb capacity and usage technique.
Graduated vs non-graduated Graduated pipettes allow approximate volume estimation and are useful in clinical and diagnostic workflows. Non-graduated pipettes are intended for general dispensing where precise measurement is not required.
Sterility requirements Sterile pipettes are used in microbiology, cell culture, and clinical applications where contamination control is essential. Non-sterile versions are suitable for general laboratory and teaching use.
Length and accessibility Long pipettes are preferred for deep vessels such as flasks and bottles, while shorter designs are used for compact tubes and small workspaces.
&nbsp;
<h2>Specifications context</h2>
&nbsp;
Disposable LDPE transfer pipettes are widely used laboratory consumables for general-purpose liquid handling in research, clinical, and educational environments. They are available in sterile and non-sterile formats with multiple tip designs and capacities to support different workflows.
These pipettes remain a standard alternative to glass Pasteur pipettes due to their safety, low cost, and reduced contamination risk in routine laboratory applications.
For bulk orders or lab-specific requirements, <a href="https://mbpinc.net/contact-us">contact the MBP team</a> for assistance and pricing.

Transfer Pipet Brochure

Wide Bore Transfer Pipet

135040 by Globe Scientific is a disposable wide bore transfer pipet: 5.5 mm (0.22") tip inner diameter, 124 mm total length, large bulb. Transfers viscous materials, particulates, and intact biological specimens — tissue biopsies, algae, sludge, pleural fluid, food products — without clogging or shearing. Non-sterile, 500/box, 5,000/case. Sterile variant: 135040-S01.

Total Length

Stem Diameter

Tip Diameter

Manufacture

Transfer Pipet, Wide Bore, Large Bulb, 124mm, 500/Dispenser Box, 10 Boxes/Unit

Transfer Pipet, Wide Bore, Large Bulb, 124mm, 500/Dispenser Box

Transfer Pipet, Wide Bore, Large Bulb, 124mm, STERILE, Individually Wrapped, 100/Bag, 5 Bags/Unit

BioFactory Accessories

<h2 dir="ltr"> What are Accessories for NEST BioFactory&trade; Systems?</h2>
 NEST BioFactory&trade; accessories are the replacement caps, silicone tubing, vent filters, overcaps, and pre-assembled closed-system cap assemblies used to configure BioFactory units for closed aseptic liquid transfer, gas exchange management, and multi-unit serial connections in cGMP and research-scale bioprocess workflows. The accessory set enables the BioFactory narrow-mouth cap to function as a closed-system liquid transfer port &mdash; media, wash buffer, trypsin, and cell harvest supernatant are transferred in and out through the silicone tubing connection without opening the vessel. Accessories for the BioFactory are required when operating the BioFactory as a closed system; for simple open-pour workflows using wide-mouth caps, standard vent and plug seal caps are the only accessories needed.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" style="color: #000000;" aria-level="1">
BioFactory media transfer caps
</li>
<li dir="ltr" style="color: #000000;" aria-level="1">
Sterile tubing and connector sets
</li>
<li dir="ltr" style="color: #000000;" aria-level="1">
Fluid transfer adapters for cell culture vessels
</li>
<li dir="ltr" style="color: #000000;" aria-level="1">
BioFactory bottle caps and closures
</li>
<li dir="ltr" style="color: #000000;" aria-level="1">
Sterile quick-connect systems
</li>
<li dir="ltr" style="color: #000000;" aria-level="1">
Liquid handling accessories
</li>
<li dir="ltr" style="color: #000000;" aria-level="1">
Vessel handling and support tools
</li>
<li dir="ltr" style="color: #000000;" aria-level="1">
Closed-system connectors for aseptic processing
</li>
</ul>
<h2 dir="ltr"> Key BioFactory Accessory Categories</h2>
 BioFactory Cap with Silicone Tube (CPC or Luer Connector) The BioFactory cap with silicone tube is the primary closed-transfer accessory: an adaptor cap that fits the narrow-mouth port of the BioFactory unit, pre-assembled with 80 cm of silicone tubing and a terminal connector &mdash; either a male CPC (clamped pressure connector / quick-connect) or a standard Luer lock &mdash; for coupling to peristaltic pumps, other BioFactory units, centrifuge tubes, or PETG media bottle assemblies. Two tubing I.D. &times; O.D. configurations are available: 1/4" I.D. &times; 3/8" O.D. and 3/8" I.D. &times; 5/8" O.D., covering standard peristaltic pump head bore sizes. The female sealing cap included with each assembly caps the connector between uses, maintaining sterility. Overcaps: Vented and Solid Overcaps are secondary dust and contamination barriers placed directly on top of the BioFactory adaptor caps during culture incubation. The vented overcap contains a 0.22 &micro;m hydrophobic breathable membrane, allowing gas exchange through the cap stack while blocking particles and microbial contamination &mdash; used during active shaker or orbital incubation when the unit's primary cap is an adaptor cap rather than a vented cap. The solid overcap provides an additional dust and contamination seal with no gas exchange &mdash; used for short-term storage or transport outside the incubator. SPT-50 Silicone Hose SPT-50 silicone hose (3/8" I.D. &times; 5/8" O.D., 50 inches / 15 meters) is the bulk tubing used to connect multiple BioFactory units in series, connect BioFactory ports to peristaltic pump heads, or extend the reach of the transfer cap assembly. SPT-50 tubing is manufactured from silicone, is individually wrapped and sterile, and passes dissolution testing per BPOG (BioPhorum Operations Group) criteria per NEST product documentation, supporting its use in biopharmaceutical production environments. Premium Accessory Package NEST offers a BioFactory Accessory Premium Package that includes 2 different adaptor caps, 1 hose clamp, 1 adaptor connector, 1 vent filter (50 mm), 1 additional hose clamp, and 15 m of SPT-50 silicone hose &mdash; all individually wrapped and sterile in a single kit. This package provides all components needed to set up a closed-system BioFactory media management workflow from a single kit, reducing the number of individual part orders required. Vent Filters for Gas Exchange Management For BioFactory units using adaptor caps rather than standard vented caps, 50 mm inline vent filters (0.22 &micro;m hydrophobic PTFE membrane) are installed on the air inlet/outlet tubing line to maintain sterile gas exchange during media addition, harvest, and incubation. The vent filter is rated for high flow rates without creating excessive back-pressure that would resist liquid movement through the system. Compatibility: Narrow-Mouth BioFactory Units Only All BioFactory accessory caps and tubing assemblies are designed exclusively for the narrow-mouth BioFactory configuration. Wide-mouth BioFactory units use standard wide-mouth vent and plug seal caps only; they are not compatible with accessory cap assemblies. Confirm that your BioFactory units have narrow-mouth ports before ordering the accessory cap set. 
<h2 dir="ltr"> Specifications Context</h2>
 NEST BioFactory&trade; accessory silicone tubing and cap assemblies are manufactured from USP Class VI silicone (TPE/silicone) and polycarbonate or PP cap bodies, individually wrapped and sterile. All components have passed dissolution testing per BPOG dissolution test criteria conducted by a certified third-party laboratory per NEST Scientific documentation. The standard Luer head connections conform to ISO 594 / GB/T 1962 for reliable compatibility with standard laboratory fittings. Vent filters use a 0.22 &micro;m hydrophobic PTFE membrane; overcaps use a 0.22 &micro;m hydrophobic membrane. NEST BioFactory accessories are carried by MBP alongside BioFactory units. 
&nbsp;
Need the right BioFactory setup? <a href="https://mbpinc.net/contact-us" style="color: #236fa1;">Contact MBP today</a> for technical assistance.

Biofactory System Accessories

Product Literature

NEST BioFactory Caps Specifications

Wide Mouth BioFactories, Individually Wrapped, Sterile, 1/pk, 10/cs

NEST Scientific 740001 is a 1-chamber Wide Mouth BioFactory with 647 cm² tissue-culture-treated growth surface. Sterile, individually wrapped, 1/pk, 10/cs. Plug or vent cap options available. For large-scale adherent cell culture, viral vector production, and cell expansion workflows.

Wide Mouth Plug Seal Caps for BioFactories, Individually Wrapped, Sterile, 1/pk, 10/cs

Wide Mouth Vent Caps for BioFactories, Individually Wrapped, Sterile, 1/pk, 10/cs

Narrow Mouth Plug Seal Caps for BioFactories, Individually Wrapped, Sterile, 1/pk, 10/cs

Narrow Mouth Vent caps for BioFactories, Individually Wrapped, Sterile, 1/pk, 10/cs

Wide Mouth Bottles

<h2 data-section-id="dscteu" data-start="0" data-end="42">What Are Wide Mouth Laboratory Bottles?</h2>
&nbsp;
Wide-mouth laboratory bottles are storage containers designed with a broad neck opening, typically ranging from 38 mm to 63 mm in diameter, allowing easy filling, dispensing, and cleaning. Their large opening makes them ideal for handling powders, granules, viscous liquids, biological samples, and other materials that are difficult to transfer through narrow-neck containers. Globe Scientific Diamond RealSeal wide-mouth bottles are available in several materials, including HDPE, polypropylene (PP), LDPE, and PETG, each suited to different laboratory applications. HDPE bottles offer excellent chemical resistance and low-temperature performance, PP bottles provide autoclavability, LDPE bottles offer flexibility, and PETG bottles are commonly used for sterile media storage. For laboratories requiring maximum storage efficiency and sterilization capability, PP square wide-mouth bottles are often the preferred option because they are autoclavable and utilize shelf space more effectively than round bottles.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
Wide mouth bottles in multiple capacities (50 mL, 100 mL, 250 mL, 500 mL, 1 L, 2 L)
</li>
<li dir="ltr" aria-level="1">
HDPE wide mouth storage bottles for general laboratory use
</li>
<li dir="ltr" aria-level="1">
Polypropylene (PP) autoclavable bottles for sterile applications
</li>
<li dir="ltr" aria-level="1">
Clear wide mouth bottles for easy sample visibility
</li>
<li dir="ltr" aria-level="1">
Amber wide mouth bottles for light-sensitive reagents
</li>
<li dir="ltr" aria-level="1">
Graduated bottles for accurate volume measurement
</li>
</ul>
&nbsp;
<h2 data-section-id="vq7xyo" data-start="1061" data-end="1096">How to Choose Wide Mouth Bottles</h2>
&nbsp;
Round vs. Square Design
Round wide-mouth bottles are the traditional laboratory format and fit easily into standard storage racks and holders. Their curved interior walls help reduce material retention during dispensing and cleaning. Square bottles maximize storage efficiency by reducing unused space between containers on shelves and inside refrigerators. They also provide flat surfaces for labels, making identification easier and improving label adhesion. Laboratories managing large inventories often favor square bottles for their superior space utilization.
Material and Temperature Requirements
HDPE wide-mouth bottles are suitable for general-purpose chemical, reagent, and sample storage. They offer broad chemical compatibility and can be used in low-temperature environments, including standard laboratory freezers and many ultra-low temperature applications. Polypropylene wide-mouth bottles are the preferred choice when sterilization is required, as they can be autoclaved at 121&deg;C without deformation. LDPE bottles provide flexibility and are useful when gentle squeezing or easy handling is beneficial, although they are not intended for autoclaving. PETG bottles combine excellent clarity with durability and are commonly selected for sterile media preparation and storage.
Amber Bottles for Light-Sensitive Materials
Amber wide-mouth bottles help protect photosensitive materials from UV and visible light exposure. They are commonly used for storing light-sensitive powders, chemicals, biological reagents, and pharmaceutical compounds. When long-term light protection is required, amber HDPE bottles provide an effective and economical storage solution.
Volume Selection
Smaller bottles in the 30&ndash;60 mL range are ideal for standards, reference materials, and small sample aliquots. Mid-size bottles between 125 mL and 500 mL are commonly used for working reagents, buffers, and routine laboratory materials. Larger bottles ranging from 1 L to 2 L are suitable for bulk powders, stock solutions, and frequently accessed laboratory reagents.
&nbsp;
<h2 data-section-id="1jl751w" data-start="3843" data-end="3868">Specifications Context</h2>
&nbsp;
Globe Scientific Diamond RealSeal HDPE and PP wide-mouth bottles are manufactured from virgin FDA-compliant resins and feature smooth interior surfaces and consistent wall thickness for reliable performance. The Diamond RealSeal closure system uses an integral-seal polypropylene cap that provides a secure, leak-resistant closure without requiring separate liners or gaskets. The Diamond Essentials line offers bulk-packaged HDPE bottles for high-volume laboratory operations where cost efficiency is important. As of 2026, 250 mL and 500 mL HDPE wide-mouth bottles remain among the most commonly used formats in research, pharmaceutical, academic, and industrial laboratories for reagent and sample storage. Explore narrow mouth bottles for liquid-focused applications and wash mouth bottles for controlled squeeze dispensing.
For product details, specifications, or bulk purchasing support, <a href="https://mbpinc.net/contact-us">the MBP team is ready to assist</a> with the right solution for your laboratory needs.

Globe Scientific BWH0060PN (Azlon) is a 60 mL wide-mouth round HDPE sample bottle with a polypropylene screwcap (~1.5 turns), translucent and rigid, with good chemical resistance. Box of 10.

Bottle, wide mouth,60mL,HDPE, round, PP screwcap, BOX/10

Bottle, wide mouth, 60mL, PP, graduated, round, PP screwcap, BOX/10

Bottle, wide mouth, 250mL, PP, graduated, round, PP screwcap, BOX/10

Bottle, wide mouth, 1000mL, PP, graduated, round, PP screwcap, BOX/5

Wash Bottles

<h2 data-section-id="gy6c1g" data-start="0" data-end="42">What Are Laboratory Wash Mouth Bottles?</h2>
&nbsp;
Laboratory wash bottles, also known as squeeze bottles or wash mouth bottles, are flexible LDPE containers available in 250 mL, 500 mL, and 1000 mL capacities. They feature a narrow dispensing nozzle or integrated draw-tube spout that delivers a controlled stream of liquid when the bottle is squeezed by hand. The flexibility of LDPE enables this dispensing action, making it the preferred material for wash bottles. These bottles are commonly used for rinsing laboratory glassware with distilled or deionized water, dispensing solvents during sample preparation, flushing residues during titrations and extractions, and directing liquids into narrow-neck vessels. Globe Scientific wash bottles are available with color-coded polypropylene caps and GHS-labeled safety-vented options for handling volatile solvents. Safety-vented wash bottles should always be used with volatile solvents such as ethanol, methanol, isopropanol, and acetone to prevent pressure build-up caused by vapor expansion.
&nbsp;
<h2 dir="ltr">What you will find: </h2>
<ul>
<li dir="ltr" aria-level="1">
Laboratory wash mouth squeeze bottles for controlled rinsing
</li>
<li dir="ltr" aria-level="1">
Chemical-resistant LDPE wash bottles for routine lab use
</li>
<li dir="ltr" aria-level="1">
Narrow-tip dispensing bottles for precise liquid flow
</li>
<li dir="ltr" aria-level="1">
Distilled water wash bottles for cleaning applications
</li>
<li dir="ltr" aria-level="1">
Buffer solution dispensing bottles for lab workflows
</li>
<li dir="ltr" aria-level="1">
Reagent-grade wash bottles for general handling tasks
</li>
<li dir="ltr" aria-level="1">
Durable plastic squeeze bottles for daily laboratory use
</li>
<li dir="ltr" aria-level="1">
Flexible wash bottles designed for repeated bench operations
</li>
<li dir="ltr" aria-level="1">
General-purpose rinse bottles for multi-use lab environments
</li>
</ul>
&nbsp;
<h2 data-section-id="zngmf6" data-start="1041" data-end="1076">How to Choose Wash Mouth Bottles</h2>
&nbsp;
Vented vs. Non-Vented
Non-vented wash bottles are suitable for deionized water, distilled water, and other non-volatile aqueous solutions. Safety-vented wash bottles include a pressure-relief vent in the dispensing nozzle, allowing solvent vapors to escape safely and reducing the risk of pressure accumulation. These bottles are recommended for volatile solvents such as ethanol, methanol, isopropanol, and acetone. Globe Scientific GHS-labeled wash bottles combine safety venting with pre-printed hazard labeling for improved chemical identification and compliance.
Color-Coded Cap System
Color-coded caps help prevent reagent mix-ups in busy laboratory environments. A commonly used convention is blue for water, red for ethanol, yellow for isopropanol, green for methanol, and white for custom labeling or general use. Establishing a consistent color-coding system throughout the laboratory helps improve safety and workflow efficiency.
Wide Mouth vs. Standard Design
Standard wash bottles use a narrow draw tube extending to the base of the bottle, allowing liquid dispensing while the bottle remains upright. Wide-mouth wash bottles feature a larger neck opening, making refilling from bulk containers, carboys, or reagent bottles faster and easier. Laboratories that refill bottles frequently often prefer wide-mouth designs to reduce spills and simplify handling.
Volume Selection
The 500 mL wash bottle is the most common laboratory size, providing a balance between capacity and ease of handling. A 250 mL bottle is ideal when smaller volumes are sufficient or greater dispensing control is required. For high-throughput environments where liquids are used continuously, 1000 mL bottles minimize refill frequency and improve efficiency.
&nbsp;
<h2 data-section-id="1jl751w" data-start="3495" data-end="3520">Specifications Context</h2>
&nbsp;
Globe Scientific Diamond RealSeal LDPE wash bottles feature an integral-seal polypropylene screw cap and draw-tube assembly for reliable dispensing. Wide-mouth models incorporate a larger neck opening to facilitate rapid refilling while retaining the same dispensing performance. GHS-labeled wash bottles are designed to support compliance with Globally Harmonized System (GHS) chemical hazard communication requirements and are widely used for solvent handling in research, pharmaceutical, industrial, and educational laboratories. As of 2026, safety-vented GHS-labeled wash bottles are considered standard practice in laboratories handling flammable solvents on the bench. Explore wide mouth bottles and narrow mouth bottles for applications requiring long-term liquid storage rather than squeeze dispensing.
<a href="https://mbpinc.net/contact-us">Request a quote from the MBP team</a> for product specifications, availability, and bulk purchasing support.

Wash Mouth Bottles

Wide Mouth Wash Bottle, PE

601638 by Globe Scientific is a 500mL wide-mouth polyethylene wash bottle with color-coded anti-drip caps that prevent involuntary dripping caused by internal pressure build-up. The wide-mouth design speeds filling and eliminates the need for a funnel, while the color-coded cap system enables rapid visual identification of bottle contents — available in blue, red, and yellow cap variants — making these bottles practical for labs handling multiple reagents, hazardous solvents, or radioactive wash solutions simultaneously.

Wash Bottle, Squeeze with Wide Mouth, Screwcap, PE, 500mL, Blue, CS/10

Wash Bottle, Squeeze with Wide Mouth, Screwcap, PE, 500mL, Clear/Natural, CS/10

Wash Bottle, Squeeze with Wide Mouth, Screwcap, PE, 500mL, Red, CS/10

Wash Bottle, Squeeze with Wide Mouth, Screwcap, PE, 500mL, Yellow, CS/10

Erlenmeyer Flasks

<h2 dir="ltr">What are Cell Culture Erlenmeyer Flasks?</h2>
 Cell culture Erlenmeyer flasks (also called shake flasks or conical flasks) are single-use, sterile plastic vessels with a conical body, flat base, and narrow neck used for suspension cell culture on orbital shakers and incubator shakers, microbial culture, and media preparation. Unlike rectangular T-flasks designed for static monolayer culture, Erlenmeyer flasks are engineered for shaking: their wide conical base maximizes liquid surface area for oxygen transfer, while the narrow neck minimizes evaporation and contamination risk. Choose PC Erlenmeyer flasks for autoclavable reuse and high-temperature media preparation; choose PETG for single-use suspension culture and processes requiring BPA-free materials.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
<a href="erlenmeyer-flasks/petg-erlenmeyer-flasks">PETG Erlenmeyer flasks: </a>strong choice for cell culture applications that need excellent clarity, reliable handling, and convenient single-use performance. They are lightweight, durable, and ideal for shaker culture, media preparation, and general suspension cell workflows.
</li>
<li dir="ltr" aria-level="1">
<a href="erlenmeyer-flasks/pc-erlenmeyer-flasks">PC Erlenmeyer flasks: </a>built for applications that require greater strength and higher impact resistance. They are well-suited for demanding lab environments, including vigorous shaking, transport, and workflows where added durability is important.
</li>
<li dir="ltr" aria-level="1"><a href="https://mbpinc.net/consumables/cell-culture/erlenmeyer-flasks/erlenmeyer-flask-accessories">Erlenmeyer Flask Accessories: </a>Includes bi-directional, inverted, and multifunctional transfer caps, plus silicon tube assemblies for 2 L, 3 L, 3 L wide-mouth, and 5 L high-efficiency flasks, supporting sterile transfer and closed-system workflows.</li>
</ul>
<h2 dir="ltr"> How to Choose Erlenmeyer Flasks for Cell Culture</h2>
 PC vs. PETG Material PC (polycarbonate) Erlenmeyer flasks are autoclavable at 121 &deg;C (typically 5&ndash;10 cycles), shatter-proof, crystal-clear, and rated from &minus;135 &deg;C to +135 &deg;C. PC is ideal for labs that sterilize media or wash in-house. PC contains BPA. PETG Erlenmeyer flasks are single-use, BPA-free, rated from &minus;80 &deg;C to +60 &deg;C, and cannot be autoclaved. They provide a contamination-free, cleaning-free alternative to glass and PC for high-throughput suspension culture operations. Flat Base vs. Baffled Base Flat-base Erlenmeyer flasks provide gentler swirling for slow-growth cell lines and media mixing. Baffled-base flasks have three or four angled internal baffles that interrupt the swirling flow, increasing turbulence, raising dissolved oxygen (DO) by up to 2&times; compared to flat-base flasks at the same orbital speed, and reducing cell sedimentation. Baffled flasks are the standard for CHO-S, HEK293-F, Sf9, microbial, and yeast cultures requiring high oxygen transfer rates. NEST Scientific offers baffled and flat-base versions in both PC and PETG across all core volumes. Vented vs. Plug Seal Cap Vented caps contain a 0.22 &micro;m hydrophobic PTFE membrane that allows free O₂/CO₂ gas exchange while excluding microbial contamination. The NEST vented cap features an oversized vent area that improves gas exchange beyond standard-size membrane caps, supporting oxygen-demanding suspension cultures at higher cell densities. Plug seal caps create a fully sealed environment for media storage, static incubation, or transport outside the incubator. Always use vented caps for actively growing suspension cultures on an orbital shaker. Volume and Fill Ratio Erlenmeyer flasks should be filled to no more than 20&ndash;25% of the nominal flask volume for suspension shaker culture to maintain adequate headspace for oxygen transfer. A 500 mL flask running at 20% fill holds 100 mL of culture; a 1,000 mL flask holds 200 mL. Overfilling reduces oxygen transfer efficiency and creates foam that blocks the vented cap membrane. For media storage (no shaking), the fill volume can approach 80% of nominal. Shaker Compatibility NEST Scientific Erlenmeyer flasks (125 mL&ndash;3,000 mL) are compatible with standard laboratory orbital shakers, including those from Infors HT, New Brunswick Scientific (Innova), and Thermo Scientific MaxQ. Confirm flask neck O.D. and base diameter against your shaker's flask holder clips or clamp system before ordering large quantities. 
<h2 dir="ltr"> Specifications Context</h2>
 NEST Scientific PC Erlenmeyer flasks are manufactured from USP Class VI medical-grade polycarbonate, gamma sterilized per ISO 11137 to SAL 10⁻⁶, and individually wrapped in sterile packaging. PETG Erlenmeyer flasks are E-beam sterilized and certified DNase/RNase-free, pyrogen-free per lot. Vented cap PTFE membranes are 0.22 &micro;m with an oversized vent area that increases gas exchange efficiency vs. standard-diameter membrane caps. NEST Scientific is ISO 9001:2015 and ISO 13485 certified with FDA registration. Flask catalog sizes extend to high-efficiency 2 L and 5 L PC formats (NEST High Efficiency Erlenmeyer Flask line) for production-scale suspension culture. MBP stocks the NEST Scientific Erlenmeyer flask line across all major volumes and configurations. 
&nbsp;
Support accurate mixing and culturing with premium Erlenmeyer flasks designed for modern laboratories. <a href="https://www.mbpinc.net/contact-us" title="Contact the MBP Team" style="color: #236fa1; text-decoration: underline;">Contact the MBP team</a>&nbsp;for a formal quote.

Flyer

Wide-mouth High Efficient Erlenmeyer Flask Closed System

C10322-AZB050A by NEST Scientific is a sterile wide-mouth 3 L polycarbonate High Efficiency Erlenmeyer Flask with pre-installed bi-directional transfer cap: 50 cm weldable TPE tubing (1/8" ID × 1/4" OD) and 0.22 µm vent filter (Φ24 mm). For closed-system mammalian and insect cell suspension culture; 1/pk, 4/cs.

3L Wide-mouth High Efficiency Erlenmeyer Flask with Bi-directional Transfer Cap with TPE Tube (50cm 1/8" ID 1/4" OD), Vent Filter (0.22 μm Φ24mm), Sterile, 1/pk, 4/cs

3L Wide-mouth High Efficiency Erlenmeyer Flask with Bi-directional Transfer Cap with TPE Tube (50cm 1/4" ID 3/8" OD), Vent Filter (0.22 μm Φ24mm), Sterile, 1/pk, 4/cs

3L Wide-mouth High Efficiency Erlenmeyer Flask with Baffles, with Bi-directional Transfer Cap with TPE Tube (50cm 1/8" ID 1/4" OD), Vent Filter (0.22 μm Φ24mm), Sterile, 1/pk, 4/cs

<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

William's E  Medium

Unit Quantity

Sterility

Appearance

Storage Condition

Disclaimer

Caution

Shipping Condition

Microcentrifuge Accessories

<h2>What Are Microcentrifuge Accessories?</h2>
&nbsp;
Microcentrifuge accessories maintain performance, extend tube-format versatility, and ensure safe operation of benchtop microcentrifuges. These include replacement fixed-angle rotors for 12&ndash;24 &times; 1.5/2.0 mL tube positions, tube adapters for 0.5 mL and 0.2 mL formats, aerosol-tight sealed rotor lids for biocontainment of infectious specimens, balance tubes for partial-load runs, and specialty rotors for PCR strips or 5.0 mL tubes where supported by the centrifuge model. All microcentrifuge accessories are model-specific, as rotor coupling systems and tube bore dimensions differ between manufacturers and even between models within the same brand, making exact model verification essential before ordering.
&nbsp;
<h2>What You Will Find:</h2>
&nbsp;
<ul>
<li>High-quality adapters and rotors for precise and reliable tube fit</li>
<li>Multiple formats including PCR strips, microtubes, plates, and spin columns</li>
<li>Specialized and high-capacity rotors for enhanced compatibility</li>
<li>Swing-out and sealed options for reliable and contamination-free processing</li>
</ul>
&nbsp;
<h2>How to Choose Microcentrifuge Accessories</h2>
&nbsp;
Replacement Rotor Identification
The rotor model number is typically printed on the rotor body or listed in the centrifuge user manual. Cross-reference it with the manufacturer's accessory catalog to confirm that the coupling system matches the centrifuge motor shaft. For standard 12-position rotors, verify compatibility with both 1.5 mL and 2.0 mL microtubes.
Tube Adapter Sizing
For 0.5 mL adapters, ensure the outer diameter closely matches the rotor bore so the tube remains secure during operation. For 0.2 mL adapters, confirm that PCR tubes are positioned correctly to achieve the intended centrifugal force while maintaining stability throughout the run.
Aerosol-Tight Sealed Lids
Choose sealed lids rated for the rotor's maximum operating RCF. O-rings should be inspected regularly for flattening, cracking, or discoloration and replaced immediately if any signs of wear appear. Maintaining replacement O-rings for frequently used lids helps ensure continued safe operation.
Specialty Rotors
Some microcentrifuge models support optional rotors for 5.0 mL tubes, PCR strips, or microplates. These accessories expand workflow flexibility but may operate at lower maximum RCF values than standard 1.5 mL rotors. Always verify the rated speed and force limits before use.
Balance Tubes
Balance tubes help maintain proper rotor balance during partial-load runs. They should closely match the mass and dimensions of the sample tubes being processed. Proper balancing reduces vibration, minimizes bearing wear, and supports long-term centrifuge performance.
&nbsp;
<h2>Specifications Context</h2>
&nbsp;
Many modern fixed-angle rotors and polypropylene adapters are autoclavable, although specific sterilization requirements vary by manufacturer and material. Always follow the OEM maintenance and decontamination guidelines for each accessory. Rotor service life is generally determined by cumulative operating hours and manufacturer recommendations rather than visual appearance alone.
Sealed rotor lid systems with one-touch release mechanisms have become standard in modern molecular diagnostic laboratories, providing improved safety, easier maintenance, and enhanced biocontainment for regulated workflows.
Stop wasting time searching. The best microcentrifuge accessories are right here at MBP Products. <a href="https://mbpinc.net/contact-us">Connect with our expert team</a> to get your equipment accessories today.

Work Station Rack for 50 x 5ml tubes

C1005-T5-RK2 by Benchmark Scientific is a latex-free workstation rack holding 50 × 5 ml centrifuge tubes, designed as an accessory for the Benchmark myFuge™ 5 (C1005) microcentrifuge. The rack stages a full 50-tube batch run at the centrifuge for organised loading, unloading, and post-spin sample handling. Order using catalog number C1005-T5-RK2 at <a href="https://www.mbpinc.net/quickorder">mbpinc.net/quickorder</a> or contact <a href="mailto:customerservice@mbpinc.net">customerservice@mbpinc.net</a>.

Cryo Boxes

<h2>What Are Cryo Boxes?</h2>
&nbsp;
Cryo boxes are lidded, gridded storage containers designed to organize cryogenic vials, microcentrifuge tubes, and centrifuge tubes inside ultra-low temperature (ULT) freezers at &minus;80&deg;C, vapor-phase liquid nitrogen refrigerators (&minus;150 to &minus;190&deg;C), and cryogenic dewars. The two primary materials are water-resistant coated cardboard (economical, single-use) and rigid polycarbonate or polypropylene (reusable, autoclavable, transparent). Standard well configurations&mdash;25 (5&times;5), 81 (9&times;9), and 100 (10&times;10)&mdash;in 2-inch and 3-inch box heights match common cryogenic vial sizes. The alphanumeric grid on the lid helps with sample tracking in LIMS systems. Cardboard cryo boxes are vapor-phase LN2 rated only; polycarbonate is required for autoclave use or liquid-phase LN2 immersion.
&nbsp;
<h2>What you will find:</h2>
&nbsp;
&bull; Standard cryo boxes for cryogenic vial storage &bull; Freezer storage boxes for ultra low temperature use &bull; Cardboard cryo boxes for cost effective storage &bull; Polypropylene cryo boxes for durability and reuse &bull; Grid format boxes for easy sample organization &bull; Hinged lid cryo boxes for quick access &bull; Color coded storage boxes for sample identification &bull; Cryo storage boxes for 1.5 mL and 2.0 mL vials
&nbsp;
<h2>How to Choose Cryo Boxes</h2>
&nbsp;
Material: Cardboard vs. Polycarbonate vs. Polypropylene
Cardboard cryo boxes are economical and used for long-term storage at &minus;80&deg;C or vapor-phase LN2. They are single-use and not autoclavable. Polycarbonate (PC) boxes are durable, transparent, and autoclavable at 121&deg;C, making them suitable for frequent handling. Polypropylene (PP) boxes also tolerate autoclaving and offer higher chemical resistance than PC. Choice depends on reuse frequency and sterilization needs.
Well Count and Vial Size
81-well (9&times;9) boxes fit standard 1.8&ndash;2.0 mL cryogenic vials up to ~13 mm outer diameter. 100-well (10&times;10) boxes are used for smaller 1.2&ndash;1.5 mL vials and microcentrifuge tubes up to ~12 mm OD. Always match vial diameter with box well size before ordering.
Box Height: 2-Inch vs. 3-Inch
2-inch boxes are standard for 1&ndash;2 mL cryovials and are most commonly used in biobanking. 3-inch boxes are for larger 3&ndash;5 mL vials and certain centrifuge tubes where extra depth is required.
LN2 Phase Compatibility
Both cardboard and hard-wall boxes can be used in vapor-phase LN2. Only polycarbonate or polypropylene boxes should be used for liquid-phase LN2 because cardboard can break down when submerged.
&nbsp;
<h2>Specifications Context</h2>
&nbsp;
Cryo boxes are typically rated from &minus;196&deg;C to +121&deg;C depending on material. Cardboard is suitable for vapor-phase LN2 only, while hard-wall plastic boxes can handle more demanding workflows. Proper selection depends on vial size, storage temperature, and how frequently samples are accessed.
Eliminate the risk of thermal damage. <a href="https://mbpinc.net/contact-us" style="color: #236fa1; text-decoration: underline;">Connect with the experts at Molecular Biology Products Inc.</a> to find the perfect storage solution for your high-value specimens.

3049-Group-Cryogenic Vial Brochure

Workstation Racks for CryoClear Vials

Globe Scientific polycarbonate workstation rack (SKU 3049) — 40-position (10×4 format) for CryoCLEAR cryogenic vials, round-bottom and self-standing. Autoclavable at 121°C, anti-slip rubber feet, one-handed cap removal. Available in blue (3049B), green (3049G), and red (3049R) for colour-coded sample organisation.

Workstation Rack for CryoCLEAR vials, Polycarbonate (PC), 40-Place (10x4 format), BLUE, BOX/5

Workstation Rack for CryoCLEAR vials, Polycarbonate (PC), 40-Place (10x4 format), GREEN, BOX/5

Workstation Rack for CryoCLEAR vials, Polycarbonate (PC), 40-Place (10x4 format), RED, BOX/5

<h2 data-section-id="v1drft" data-start="0" data-end="43">What are cloning chemicals and reagents?</h2>
&nbsp;
Cloning chemicals and reagents cover the enzymes, buffers, and molecular biology-grade chemicals used in DNA fragment preparation, modification, and purification within a cloning workflow, including restriction endonucleases, T4 DNA ligase and other DNA-modifying enzymes (phosphatases, polymerases), reaction buffers, and plasmid extraction reagents. Related entities include restriction enzyme digestion, DNA dephosphorylation/phosphorylation, plasmid DNA purification (column-based and magnetic bead-based), and enzyme unit definitions.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" role="presentation">Targeted XJa and XJb strains for faster recovery of proteins.</li>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" role="presentation">Mix &amp; Go! solutions for optimized and dependable bacterial transformation.</li>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" role="presentation">Culture Media &amp; Supplements used for yeast research, and include YPD Plus and mating pheromones.</li>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" role="presentation">Extraction and Lysis Reagents include reliable genomic preparation and yeast protein kits.</li>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" role="presentation">Chromogenic Substrates and Enzymatic Inducers with highly pure X-GAL and IPTG for cloning and blue-white screening.</li>
</ul>
&nbsp;
<h2 data-section-id="1daajgc" data-start="866" data-end="913">How to choose cloning chemicals and reagents</h2>
&nbsp;
Restriction enzyme selection and buffer compatibility
Restriction enzymes require specific reaction buffers, and many modern enzyme lines use a single universal buffer compatible across multiple enzymes to simplify double-digest reactions; confirm buffer compatibility when combining enzymes from different suppliers or using older single-buffer-per-enzyme formulations.
Enzyme unit definitions and reaction scale
Restriction enzyme and ligase activity is defined in units per microliter, with one unit typically defined as the amount needed to digest or ligate a defined quantity of standard substrate DNA under specified conditions in a set time; scale enzyme quantity to the amount of DNA being processed rather than assuming a fixed volume works for all reaction sizes.
Plasmid purification grade
Plasmid DNA extraction reagents range from molecular biology grade, suitable for general cloning and sequencing, to transfection-grade or endotoxin-free formulations required for applications such as lentiviral packaging or mammalian cell transfection, where endotoxin contamination can reduce transfection efficiency or cause cell stress.
Dephosphorylation for preventing vector self-ligation
Alkaline phosphatase treatment of a linearized vector before ligation removes 5' phosphate groups, preventing vector self-ligation and improving the ratio of recombinant clones; this step is particularly useful when the vector and insert share compatible sticky ends that could otherwise religate without insert incorporation.
&nbsp;
<h2 data-section-id="1fljvas" data-start="3459" data-end="3484">Specifications context</h2>
&nbsp;
Restriction enzymes and ligases are supplied at defined unit concentrations (commonly 10&ndash;20 units per microliter for restriction enzymes), with reaction buffers formulated for specific pH and salt conditions optimized for enzyme activity. Plasmid purification kits are differentiated by yield (micrograms of DNA recovered), purity (A260/A280 ratio), and endotoxin level (endotoxin units per microgram), with endotoxin-free kits specifying levels below a defined threshold suitable for transfection applications.&nbsp;
This sub-category is part of MBP's cloning catalog alongside ligation independent cloning kits and transformation kits and competent cells, used downstream of enzyme-based fragment preparation. Labs producing custom lentivirus for immortalization can also review MBP's cell immortalization catalog. MBP's specialist team can help confirm enzyme buffer compatibility and plasmid purification grade for a specific downstream application before order placement.
<a href="https://mbpinc.net/contact-us">Contact the expert team </a>at MBP today to request a quote for high-purity chemicals and reagents.

Chemicals/Reagents

MSDS

X-GAL (5-bromo-4-chloro-3-indolyl β-D-galactopyranoside)

X1001-25 by Zymo Research is X-GAL, a ready-to-use 2% w/v sterile solution in DMF for blue-white colony screening and β-galactosidase detection. Available as X1001-25 (5 × 5 ml) and X1001-5 (1 × 5 ml). Formulated to minimize false positives. Store at -20°C. Made in the USA by Zymo Research.