Brands

Vortex Mixers

<h2>What are laboratory vortex mixers?</h2>
&nbsp;
A laboratory vortex mixer is a small benchtop instrument with an eccentrically rotating motor that drives a cup-shaped rubber head in a rapid circular path, creating a vortex in liquid-filled tubes or vessels pressed onto the cup. The vibration transfers through the closed tube wall to the liquid, generating a powerful swirling vortex that thoroughly mixes tube contents within seconds. Vortex mixers are used throughout the laboratory for resuspending pellets after centrifugation, mixing enzyme reaction components, homogenizing samples, dissolving compounds, and briefly but thoroughly mixing any small tube or vessel.
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<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" aria-level="1">
BLUline vortex mixer: with a flip-head for faster, touch-based mixing
</li>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" aria-level="1">
BenchMixer&trade; vortex mixers: for everyday, reliable lab vortexing
</li>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" aria-level="1">
BenchMixer&trade; XL multi-tube vortexer: for high-performance output sample processing
</li>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" aria-level="1">
Labnet Orbit 300 multipurpose digital vortexer: for programmable and controlled mixing
</li>
<li dir="ltr" style="font-family: arial, helvetica, sans-serif;" aria-level="1">
Vortex mixer accessories: including horizontal heads, tube racks, and foam holders for different tube sizes and applications
</li>
</ul>
&nbsp;
<h2>How to choose a vortex mixer</h2>
&nbsp;
Choose touch-mode for ad hoc brief mixing and continuous-mode for timed runs
Touch-mode vortex mixers run only when a tube or vessel is pressed against the cup head, stopping immediately on release &mdash; the natural format for brief, on-demand mixing during pipetting workflows. Continuous-mode switches the mixer to run at a set speed without tube contact, suitable for timed mixing steps or when using a multi-tube adapter for batch runs.
Match vortex speed range to your application
Standard vortex mixers operate between approximately 600 and 3200 rpm, with lower speeds appropriate for gentle mixing of delicate samples or larger vessels, and full speed appropriate for vigorous resuspension of tightly packed pellets. Variable-speed models with a dial allow speed to be dialed down for sensitive applications.
Confirm tube compatibility with the cup head or adapter
The standard cup head on most vortex mixers accommodates 1.5 mL and 2 mL microcentrifuge tubes directly, and most standard tube formats up to approximately 50 mL can be mixed by holding the tube against the cup at the appropriate angle. For 15 mL and 50 mL conical tubes, holding at a slight angle rather than vertical provides more efficient mixing.
Consider a multi-tube foam insert for batch processing
Foam inserts and multi-tube adapters allow 6, 8, or more tubes to be mixed simultaneously during a timed continuous-mode run, suited for batch mixing of many samples between processing steps.
Check that footprint and noise level suit your bench placement
Vortex mixers vary considerably in physical footprint and operating noise; models with a suction-cup base or weighted housing reduce walking on the benchtop at high speed. For open-plan labs or shared spaces, noise level at full speed is worth checking in product specifications.
&nbsp;
<h2>Specifications context</h2>
&nbsp;
The classic vortex mixing action produces a liquid vortex through eccentrically driven cup oscillation at typically 2000&ndash;3200 rpm for full-speed operation, a mechanism that has remained essentially unchanged since the Vortex-Genie design introduced by Scientific Industries in 1962. As of 2026, variable-speed vortex mixers with touch-mode and continuous-mode operation and a removable cup head for accessory attachment remain the most widely used format in molecular biology and biochemistry labs.
<a href="https://mbpinc.net/contact-us">Contact the MBP team today</a> to request a quote and find the right vortex mixer for your application.

Product Literature

Labnet Orbit 300 Multipurpose digital Vortexer, without platform, 120V

S2030-300-B by Labnet International is the Orbit 300 Multipurpose Digital Vortexer, sold without a platform, running 100-1200 rpm with a 3mm orbit and digital speed and time display, at 120V.

Speed Range

Timer

Motion/orbit size

Maximum capacity

Ambient operating range

Dimensions (W x D x H)

Weight

Manufacture

Declaration of Conformity

Labnet Orbit P4 Digital Shaker with platform for 4 microplates, 120V

S2020-P4-B by Labnet International is the Orbit P4 Digital Shaker, a compact orbital shaker that holds up to 4 standard microplates at 100-1400 rpm with a 3mm circular orbit, digital LED speed and timer display, and a +4 to 65C operating range.

Speed range*

Maximum load

Base dimensions (W x D x H)

Electrical

Maximum speed

Laboratory Oven

<h2>What Are Laboratory Ovens?</h2>
&nbsp;
Laboratory ovens are electrically heated, thermally insulated chambers that maintain a defined temperature for drying, heating, curing, sterilizing, or processing solid samples and materials placed on internal shelves. Unlike water baths or dry block heaters that heat liquid samples in tubes, laboratory ovens process bulk materials, glassware, powders, porous materials, and large samples that cannot fit in tube-based incubators. The two principal oven types are forced air convection ovens (using a fan to circulate heated air at 300-500 m3/h for uniform, rapid temperature distribution and moisture removal) and vacuum drying ovens (sealing the chamber and using an external vacuum pump to reduce pressure below 133 Pa, dramatically lowering the boiling point of water and solvents to enable low-temperature drying at 30-60 degrees C for heat-sensitive materials). Choose forced air convection for most drying, sterilization, and curing applications at temperatures above 50 degrees C. Choose vacuum ovens when samples are heat-sensitive, oxygen-sensitive, or require solvent removal at temperatures below 60 degrees C.
&nbsp;
<h2 dir="ltr">What You Will Find:</h2>
&nbsp;
<a href="https://mbpinc.net/equipments/temperature-control-equipment/laboratory-oven/forced-drying-ovens" title="Forced Drying Ovens:">Forced Drying Ovens:</a>
<ul>
<li>High-speed fans ensure rapid temperature recovery and perfect heat uniformity across every shelf.</li>
<li>Stainless steel interiors provide maximum durability and are easy to keep clean and organized.</li>
</ul>
<a href="temperature-control-equipment/laboratory-oven/vacuum-drying-ovens" title="Vacuum Drying Ovens:">Vacuum Drying Ovens:</a>
<ul>
<li>Reduced-pressure environments allow for safe moisture removal at lower temperatures for heat-sensitive materials.</li>
<li>Digital safety controls protect your samples from oxidation and prevent accidental overheating.</li>
</ul>
&nbsp;
<h2>How to Choose a Laboratory Oven</h2>
&nbsp;
Forced air vs. vacuum
Forced air convection ovens use a fan to distribute heated air uniformly throughout the chamber, providing rapid temperature recovery after door opening and temperature uniformity of plus or minus 1-5 degrees C across the chamber. They are suitable for drying glassware and labware after washing, dehydrating soil or biological specimens for moisture content analysis, dry heat sterilization at 160-180 degrees C, polymer curing, aging tests, and annealing of soft materials. Vacuum drying ovens remove air and moisture from a sealed chamber by vacuum pump, enabling drying at 30-200 degrees C at pressures below 133 Pa. They are required for heat-sensitive pharmaceuticals and APIs, porous materials with moisture trapped in internal cavities, electronic components sensitive to oxidation, and materials processed under oxygen-free conditions.
Temperature range
Standard laboratory ovens cover ambient plus 10 degrees C to 250-300 degrees C for most research and quality control applications. Forced air drying ovens such as the Labtron LFDO-A18 specify RT plus 10 degrees C to 300 degrees C with 225 L capacity. High-temperature ovens reach 350-500 degrees C for ceramics and materials research. Vacuum drying ovens typically cover RT plus 10 degrees C to 200 degrees C; the lower maximum reflects the glass or stainless steel chamber design and silicone door seal constraints. Avoid specifying an oven with a maximum temperature far above the required process temperature: ovens are less stable and less uniform at temperatures well below their ceiling.
Chamber volume and shelf capacity
Oven chamber volume is specified in liters (15 L to 500 L for benchtop models; floor-standing models up to 1,000 L) or cubic feet (0.5 to 18 cu. ft.). Shelf count, shelf dimensions, and maximum load per shelf (kg per shelf) determine actual sample throughput. Standard benchtop laboratory ovens have 2-4 adjustable stainless steel perforated shelves. Vacuum ovens have 2-4 heated shelves in a smaller chamber (typically 0.6-3 cu. ft.) sealed for pressure operations.
Temperature uniformity
Uniformity (variation across the chamber at setpoint) for forced air ovens is typically plus or minus 2-5 degrees C for standard models and plus or minus 0.5-2 degrees C for precision models. Uniformity is improved by forced air circulation but remains poorer than dry block heaters or water baths because the larger chamber volume contains thermal gradients even with fan circulation. Placing samples in the center of the chamber away from walls and heating elements reduces exposure to thermal gradients.
Safety and ventilation
Standard laboratory ovens are not rated for flammable solvent applications and must not be used with volatile organic solvents (ethanol, acetone, diethyl ether): solvent vapors can ignite on the heating elements or fan motor. For flammable solvent work, explosion-proof or flammable-material-safe ovens with ATEX-rated motors and all-inert internal components are required. Over-temperature protection (safety thermostat at a fixed cutoff above the setpoint) and over-current protection are standard safety features on research-grade laboratory ovens.
&nbsp;
<h2>Specifications Context</h2>
&nbsp;
Forced air ovens achieve temperature uniformity of plus or minus 2-5 degrees C across the chamber when the fan is in operation; uniformity degrades toward the chamber corners and near the heating elements. Vacuum drying ovens at 0.098 MPa vacuum (133 Pa, near full vacuum for benchtop models) reduce the boiling point of water from 100 degrees C to approximately 40-50 degrees C, enabling thorough drying of heat-sensitive materials at setpoints as low as 40 degrees C without thermal degradation. Dry heat sterilization of glassware in a forced air oven is typically performed at 160-180 degrees C for 2-4 hours, destroying bacterial spores and endotoxin more effectively than autoclave steam sterilization at equivalent temperatures. Forced air laboratory ovens with 4-zone heated air jacket designs, microprocessor PID controls, programmable multi-segment ramp-and-hold profiles, and USB data logging are the standard specification for new research and pharmaceutical laboratory installations.&nbsp;
&nbsp;
Ready to upgrade your thermal capacity? Explore our laboratory oven range and <a href="https://mbpinc.net/contact-us">reach out to the MBP team</a> for a friendly quote today.

ProBlot-12-Hybridization-Oven-Brochure

User Manual

ProBlot-Hybridization-Oven-Temperature selection guide

Labnet Problot Hybridization Oven

H0600A by Labnet International (ProBlot 6) — microprocessor-controlled hybridization oven for 6 large (35 mm) or 12 small bottles plus 50 mL tubes. Temperature range: ambient +5°C to 80°C, ±0.5°C uniformity; rotisserie 4–20 rpm. Mirrored SS interior, see-through door, 120V. Contact MBP for pricing.

Bottle capacity

Optional rocker speed

Temperature range

Temperature control

Accuracy/Uniformity

Exterior dimensions (W x D x H)

Chamber dimensions (W x D x H)

Problot 6 Hybridization Oven 1

Problot 12 Hybridization Oven

Shaking Incubators

VorTemp™ 1550 Shaking Incubator-temperature selection guide

Labnet VorTemp 1550 Shaking Incubator for microtubes and microplates, 120V

S2050A by Labnet is the VorTemp™ 1550 Shaking Incubator, combining 200–900 rpm orbital shaking with temperature control from ambient +5°C to 99°C (±0.5°C) in a benchtop unit that holds 18 × 15 mL or 8 × 50 mL tubes. A programmable timer (1–99 min or continuous) and 120V operation suit North American research labs

Temperature Range

Temperature Accuracy

Motion, Orbit

Capacity

Dimensions

Labnet Vortex Mixer,120V

The S0200 by Labnet International is the VX-200 Vortex Mixer, a 120V benchtop vortexer with continuously variable speed from 0 to 3400 rpm and a circular-orbit CombiCup head.

Operating Modes

Ambient Operating Range

Laboratory Balances Accessories

W1105-Calibration Weight Tolerance Chart

Laboratory Balance Calibration Weights, Sets

W1105-12-500 by Accuris (Benchmark Scientific) is a 12-piece M1 class OIML calibration weight set spanning 1 g to 500 g, made from 316 stainless steel, supplied in a protective carrying case with a Certificate of Verification. Suitable for calibrating top-loading and precision balances with 0.1 g to 0.01 g readability.

Accuris™ M1 Grade Calibration Weight, Set, 12 pcs, 1g to 500g

Accuris™ M1 Grade Calibration Weight, Set, 13 pcs, 1g to 1000g

Accuris™ M1 Grade Calibration Weight, Set, 22 pcs, 1mg to 200g

Accuris™ M1 Grade Calibration Weight, Set, 21 pcs, 1mg to 100g

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

Large Capacity Leak Resistant Containers

Globe Scientific 6540 is a 250 mL (8 oz) polypropylene container with a separate ribbed yellow PE screw cap. Molded graduations, stackable, non-sterile, 100 per case. For histology specimen storage, gross pathology, and large-volume clinical containment.

Container: Histology, 250mL (8oz), PP, Graduated, with Separate Yellow Screwcap, CS/100

Container: Histology, 500mL (16oz), PP, Graduated, with Separate Yellow Screwcap, CS/100

Container: Histology, 1000mL (32oz), PP, Graduated, with Separate Yellow Screwcap, CS/100

Large Volume Centrifuge Tubes

<h2 data-section-id="kb9bww" data-start="0" data-end="42">What Are Large Volume Centrifuge Tubes?</h2>
&nbsp;
Large volume centrifuge tubes are polypropylene conical-bottom vessels available in 250 mL and 500 mL formats, designed for preparative and process-scale centrifugation at speeds of up to 6,000&ndash;7,500 &times; g in compatible swing-bucket or fixed-angle rotors. These tubes are used for applications such as cell harvesting from bioreactors, viral vector and vaccine production, large-scale protein precipitation, gradient preparation, and clarification of culture supernatants where 50 mL tubes are insufficient.
Polypropylene construction provides resistance to most organic solvents, stability across a temperature range of &minus;80 &deg;C to +120 &deg;C, and full autoclavability for sterile processing workflows.
Use 250 mL or 500 mL centrifuge tubes for process-scale volumes above 50 mL when compatible large-capacity rotors and support systems are available.
&nbsp;
<h2 dir="ltr">This section contains:</h2>
&nbsp;
<a href="https://mbpinc.net/consumables/centrifuge-tubes/large-volume-centrifuge-tubes/250ml-centrifuge-tubes" title="250mL Centrifuge Tubes">250mL Centrifuge Tubes </a>&ndash; Optimized for pilot-scale harvesting and efficient mid-range sample concentration.
<a href="https://mbpinc.net/consumables/centrifuge-tubes/large-volume-centrifuge-tubes/500ml-centrifuge-tubes" title="500mL Centrifuge Tubes">500mL Centrifuge Tubes</a> &ndash; Industrial-strength vessels designed for bulk bioprocessing and high-capacity separations.
&nbsp;
<h2 data-section-id="1riycx1" data-start="904" data-end="950">How to Choose Large Volume Centrifuge Tubes</h2>
&nbsp;
250 mL vs 500 mL
Choose 250 mL tubes when process volumes per tube run 150&ndash;240 mL &mdash; overfilling beyond ~80% of rated volume risks spill and cap failure. 500 mL tubes are used for volumes from 300&ndash;480 mL, common in vaccine and viral vector production, large-scale mammalian cell culture harvest, and preparative density-gradient centrifugation. The 500 mL tube has a larger diameter (95 mm) and shorter height (146 mm) than the 250 mL tube (60 mm &times; 160 mm), requiring a different rotor adapter.
Support Cushions and Rotor Compatibility
Large volume centrifuge tubes require properly fitted rotor support cushions (typically made from polyetherimide or similar materials) unless the rotor is specifically designed for direct tube support. These cushions prevent tube wall deformation under centrifugal force. Without correct support, tube failure may occur. Compatibility between tubes, cushions, and rotor buckets must always be confirmed before use.
Cap Type: Plug-Seal vs Flat Screw Cap
Plug-seal screw caps made from high-density polyethylene (HDPE) provide an internal sealing mechanism that improves leak resistance during high-force centrifugation, especially with viscous or biohazardous materials. Flat screw caps are generally used for lower-risk applications involving mixing or storage. Large volume polypropylene tubes are typically supplied with plug-seal caps rated for reliable containment under pressure conditions.
Sterility and Certification
Sterile large volume centrifuge tubes are gamma-irradiated to achieve a sterility assurance level (SAL) of 10⁻⁶ and are required for applications such as viral vector production, vaccine manufacturing, and primary cell culture workflows. Non-sterile RNase-free and DNase-free tubes are suitable for chemical processing steps and downstream analytical procedures where sterility is not critical.
&nbsp;
<h2 data-section-id="1xe8cvr" data-start="3019" data-end="3066">Compare Large Volume Centrifuge Tube Formats</h2>
&nbsp;
250 mL polypropylene conical centrifuge tubes are designed for intermediate process-scale applications. These tubes typically measure around 60 mm in diameter and 160 mm in height and are rated for centrifugal forces up to approximately 6,000&ndash;7,500 &times; g. They are commonly supplied sterile with HDPE plug-seal caps and are packaged in bags, often in case quantities of around 70 tubes per case.
500 mL polypropylene conical centrifuge tubes are intended for large-scale processing applications involving high culture volumes or bulk precipitation workflows. These tubes typically measure around 95 mm in diameter and 146 mm in height and are rated up to approximately 6,000 &times; g. They are supplied sterile with HDPE plug-seal caps and are commonly packaged in case quantities of around 40 tubes per case.
&nbsp;
<h2 data-section-id="1jl751w" data-start="3881" data-end="3906">Specifications Context</h2>
&nbsp;
Large volume polypropylene centrifuge tubes are manufactured from high-clarity polypropylene resin and are certified sterile, RNase-free, DNase-free, and pyrogen-free. Sterile lots are typically gamma-irradiated to SAL 10⁻⁶ in accordance with ISO 11137 standards. Molded graduations allow approximate volume estimation without removing tubes from the centrifuge rotor.
As of 2026, MBP stocks both 250 mL and 500 mL large volume centrifuge tube formats. Support cushions and rotor-specific accessories are typically required and must be verified for compatibility prior to ordering.
Ready to secure your high-volume runs? <a href="https://mbpinc.net/contact-us" style="color: #236fa1; text-decoration: underline;">Reach out to the Molecular Biology Products Inc. team</a> for a custom quote today.

<h2>What Are 250 mL Centrifuge Tubes?</h2>
&nbsp;
250 mL centrifuge tubes are large-volume polypropylene conical tubes designed for processing sample volumes that exceed the capacity of standard 50 mL conical tubes. They are commonly used for cell culture harvests, density-gradient separations, protein precipitation, viral workflows, and other preparative laboratory applications.
These tubes provide an efficient solution for handling medium- to large-scale samples while remaining easier to manage than 500 mL formats. Most models feature leak-resistant caps, molded graduations, and compatibility with swing-bucket centrifuge rotors designed for large-volume processing.
&nbsp;
<h2>What we offer at MBP:</h2>
&nbsp;
<ul>
<li>250 mL centrifuge tubes with leak-proof caps and molded graduations</li>
<li>Tubes with transfer-cap configurations for closed-system fluid handling</li>
<li>Gamma-irradiated sterile tubes for biopharmaceutical and cell culture applications</li>
<li>Autoclavable polypropylene vessels for repeated sterilization cycles</li>
<li>RNase-free and DNase-free tubes for molecular biology workflows</li>
<li>Large-volume centrifuge tubes designed for demanding processing applications</li>
</ul>
&nbsp;
<h2>How to Choose 250 mL Centrifuge Tubes</h2>
&nbsp;
Rotor Compatibility Verify that your centrifuge system supports 250 mL tubes and any required adapters or support cushions. Proper rotor compatibility is essential for safe and reliable operation during centrifugation.
Sterility Requirements Sterile, gamma-irradiated tubes are recommended for cell culture, viral, and sensitive biological applications. Non-sterile options are suitable for general laboratory processing and chemical workflows where sterility is not required.
Graduations and Visibility Molded graduations provide convenient approximate volume measurements and should remain visible after repeated use and sterilization procedures.
Packaging and Supply Planning Large-volume centrifuge tubes are often supplied in moderate case quantities. Laboratories with frequent processing requirements may benefit from maintaining regular inventory levels to avoid workflow interruptions.
&nbsp;
<h2>Specifications Context</h2>
&nbsp;
250 mL centrifuge tubes are typically manufactured from high-clarity polypropylene and fitted with secure, leak-resistant caps for safe sample handling. Many products are autoclavable and suitable for temperature ranges commonly encountered in laboratory storage and sterilization procedures.
Sterile versions are available with certifications such as RNase-free, DNase-free, and non-pyrogenic status to support molecular biology and bioprocessing applications. Proper accessories, including compatible rotor cushions and adapters, should always be verified before use.
As of 2026, MBP offers large-volume centrifuge tubes for research, clinical, and bioprocessing laboratories. <a href="https://mbpinc.net/contact-us">Contact the Molecular Biology Products Inc. team</a> for product information and technical support.

250ml Centrifuge Tubes

<h2 data-section-id="57m9pt" data-start="0" data-end="36">What Are 500 mL Centrifuge Tubes?</h2>
&nbsp;
500 mL centrifuge tubes are large-format polypropylene conical vessels used for process-scale centrifugation applications where sample volumes exceed approximately 300 mL per tube. These tubes typically have standard dimensions of 95 mm outer diameter and 146 mm height, and feature a conical bottom that enables efficient pellet formation and recovery. They are rated for use up to 6,000 &times; g in a compatible swing-bucket rotor system equipped with polyetherimide (PEI) support cushions.
These tubes are commonly used in large-scale mammalian cell culture harvesting from bioreactors, viral vector production (including AAV and lentivirus), vaccine manufacturing workflows, large-volume density-gradient separations, and preparative-scale protein or nucleic acid precipitation.
500 mL centrifuge tubes are used when process volumes are 300&ndash;480 mL per run and a 250 mL tube would require multiple centrifugation cycles.
<h2 dir="ltr">&nbsp;</h2>
<h2 dir="ltr">The MBP Quality Standard:</h2>
&nbsp;
<ul>
<li dir="ltr">High-capacity 500ml vessels for industrial-strength bulk concentration.</li>
<li dir="ltr">Bi-directional transfer caps with silicone tubing for closed-system fluid handling.</li>
<li dir="ltr">Gamma-irradiated sterile containers validated for aseptic processing.</li>
<li dir="ltr">Chemical-resistant construction for durability against aggressive buffers.</li>
</ul>
&nbsp;
<h2 data-section-id="1njhdwk" data-start="971" data-end="1011">How to Choose 500 mL Centrifuge Tubes</h2>
&nbsp;
Rotor Compatibility First
500 mL centrifuge tubes require a compatible swing-bucket rotor system that can accommodate a 95 mm tube diameter along with appropriate PEI support cushions. Common compatible systems include Thermo Fisher TX-750 and equivalent swing-bucket rotor models. It is essential to confirm both rotor bucket compatibility and correct cushion part numbers before use.
Using 500 mL tubes without proper support cushions or in incompatible rotors can lead to tube deformation or failure even at relatively low centrifugal forces.
Sterility for Bioproduction Workflows
Sterile 500 mL centrifuge tubes are gamma-irradiated to a sterility assurance level (SAL) of 10⁻⁶ and are certified RNase-free, DNase-free, and non-pyrogenic. These are required for bioproduction applications such as viral vector manufacturing, vaccine production, and primary cell culture workflows.
Non-sterile tubes may be used for downstream processing steps, chemical precipitation, or other laboratory applications where sterility is not required.
Cap Integrity and Leak Prevention
500 mL tubes are equipped with HDPE plug-seal screw caps that create an internal compression seal within the tube neck. This design provides leak resistance up to 95 kPa (14 psi), which is important for handling biohazardous or high-risk samples such as BSL-2 cell lines or viral vectors.
Proper cap closure is critical before centrifugation; caps must be fully tightened without cross-threading to ensure safe operation.
Pack Size and Ordering Considerations
These tubes are typically supplied in packs of 5 tubes per bag and 8 bags per case, totaling 40 tubes per case. Because of the relatively low number of tubes per case compared to smaller formats, laboratories performing high-throughput bioprocessing often maintain standing purchase orders to avoid supply interruptions.
&nbsp;
<h2 data-section-id="1hsndwv" data-start="2893" data-end="2933">Specifications Context</h2>
&nbsp;
500 mL polypropylene centrifuge tubes are manufactured from high-clarity polypropylene resin and are certified RNase-free, DNase-free, and non-pyrogenic. Sterilization is performed via gamma irradiation in compliance with ISO 11137 standards, achieving a sterility assurance level of 10⁻⁶. Molded graduations on the tube body allow approximate volume measurement without removing the tube from the centrifuge rotor.
As of 2026, MBP supplies 500 mL large volume centrifuge tubes; availability, brand options, and lot-specific details may vary. Support cushions are required for safe operation and must be confirmed as compatible with the selected rotor system prior to ordering.
Secure your research and your results. <a href="https://mbpinc.net/contact-us" style="color: #236fa1; text-decoration: underline;">Connect with the experts at Molecular Biology Products Inc.</a> for a quote.

500ml Centrifuge Tubes

Flyer

6334 by Globe Scientific is a 225 mL polypropylene centrifuge tube with an attached HDPE plug-seal cap, rated to 7,500 × g. Gamma-irradiation sterilized (SAL 10⁻⁶, ISO 11137), DNase/RNase-free, non-pyrogenic, autoclavable at 121°C, and freezable to −40°C. Manufactured under ISO 13485:2016 and ISO 9001:2015 in a Class 100,000 cleanroom. 48 tubes/case (6/bag).

Centrifuge Tube, 225mL Large Volume, Attached White Screw Cap, PP, 6/Bag, CS/48

Centrifuge Tube, 250mL Large Volume, Attached White Screw Cap, PP, 6/Bag, CS/48

Centrifuge Tube, 500mL Large Volume, Attached White Screw Cap, PP, 6/Bag, CS/36

Latex Gloves

<h2>What are latex examination gloves?</h2>
&nbsp;
Latex examination gloves are single-use disposable hand protection items made from natural rubber latex (NRL), which is derived from the sap of the rubber tree (Hevea brasiliensis). They are designed to meet ASTM D3578 standards for strength, elasticity, fit, and barrier integrity.
Compared with synthetic alternatives like nitrile, latex gloves have a lower elastic stiffness, meaning they stretch more easily and conform closely to the shape of the hand. This gives them superior tactile sensitivity, which is why they are still widely used in precision laboratory work, dental procedures, surgical environments, and fine sample manipulation tasks. Most modern latex gloves are powder-free, using chlorination or polymer coatings to allow easy donning without contamination risks.
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<h2>What you will find:</h2>
&nbsp;
<ul>
<li>
Powder-free latex gloves for reduced contamination risk and cleaner samples
</li>
<li>
Examination-grade latex gloves for versatile laboratory use and diagnostics
</li>
<li>
High-dexterity latex gloves for precise handling during intricate tasks
</li>
</ul>
&nbsp;
<h2>How to choose latex examination gloves</h2>
&nbsp;
Tensile strength and elongation
Latex gloves are tested under ASTM D3578, which requires high elasticity and durability. They must withstand significant stretching without tearing, ensuring reliability during pipetting, dissection, and clinical procedures. This high elongation capacity is one of the main performance advantages of latex over nitrile.
AQL and medical-grade standards
Medical-grade latex gloves typically have an AQL of 2.5 or lower, meaning very low acceptable defect rates. These are required for laboratory, clinical, and pharmaceutical applications involving biological or chemical exposure. Industrial-grade gloves with higher AQL values are not suitable for controlled or regulated environments.
Powder-free requirement
All laboratory latex gloves should be powder-free. Powdered versions are no longer appropriate for scientific or clinical use because they can contaminate cell cultures, PCR reactions, and sensitive analytical assays. Powder-free gloves use chlorination or polymer coatings instead of cornstarch powder.
Grip and surface texture
Latex gloves may be smooth or textured. Textured fingertips improve grip during wet procedures such as pipetting, centrifuge tube handling, or tissue manipulation. Smooth versions are easier to don but offer less grip in wet environments.
Latex allergy risk
Natural rubber latex contains allergenic proteins that can trigger reactions in sensitive individuals. Because of this, laboratories must assess allergy risk and ensure nitrile alternatives are available. Repeated exposure increases sensitization risk, so many facilities have shifted fully to nitrile.
&nbsp;
<h2>Specifications context</h2>
&nbsp;
Latex examination gloves are governed by ASTM D3578, which defines mechanical strength, elongation, and quality requirements. Additional standards such as ASTM D5712 and ASTM D6124 assess protein content and residual powder levels. Medical-grade latex gloves are regulated as Class II medical devices in many regions and require compliance documentation such as FDA 510(k) clearance for clinical use. As of 2026, powder-free latex gloves remain common in surgical, dental, and high-dexterity laboratory applications, although many general labs now prefer nitrile due to allergy considerations.
If you're looking to balance precision with protection, MBP can help you choose the right latex glove option for your lab needs. <a href="https://mbpinc.net/contact-us">Connect with our helpful team</a> today to request a quote.

Latex Powder Free Examination Gloves Specifications

Latex Powder Free Examination Gloves

901001 by NEST Scientific is a powder-free natural rubber latex examination glove with 0.11 mm palm thickness, textured fingertips, beaded cuff, and ≥18.0 MPa tensile strength, available in sizes XS–XL (100/box) for laboratory, clinical, and general protective use.

Manufacturer

Latex examination gloves,powder free, extra small, 100/box,1000/cs

Latex examination gloves, powder free, small, 100/box,1000/cs

Latex examination gloves, powder free, medium, 100/box,1000/cs

Latex examination gloves, powder free, large, 100/box,1000/cs

Latex examination gloves, powder free, extra large, 90/box,900/cs

<h2 data-section-id="185nm5c" data-start="0" data-end="38">What is classic cell culture media?</h2>
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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.
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<h2 dir="ltr">What you will find:</h2>
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<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.
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<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;
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<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>
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<h2 data-section-id="1blio5n" data-start="931" data-end="964">How to choose a classic medium</h2>
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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>
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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

Leibovitz L-15  Medium

Leibovitz L-15 Medium (TM507) by Applied Biological Materials is a 500 ml bicarbonate-free basal medium buffered by phosphates and free-base amino acids for CO₂-independent mammalian cell culture. Contains L-glutamine and phenol red; no sodium bicarbonate, HEPES, or glucose. Supplement with 10% FBS. Store at 2–8°C, protected from light.

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Sterility

Appearance

Storage Condition

Disclaimer

Caution

Shipping Condition

<h2>What Are Spin-Column Viral DNA Extraction Kits?</h2>
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Spin-column viral DNA extraction kits combine a chaotropic lysis and binding buffer with a silica-membrane spin column housed in a collection tube, allowing viral DNA to be purified using a standard laboratory microcentrifuge. Following lysis, viral nucleic acids bind to the membrane while contaminants are removed during wash steps before purified DNA is eluted for downstream analysis.&nbsp;Choose a spin-column viral DNA extraction kit when processing low-to-moderate sample volumes and when a standard benchtop microcentrifuge provides a more practical solution than a 96-well plate workflow.
&nbsp;
<h2>What You Will Find</h2>
&nbsp;
<ul>
<li>Obtain high-quality viral nucleic acids using spin-column-based purification for PCR, qPCR, sequencing, and molecular diagnostic applications.</li>
<li>Mini and maxi purification formats for efficient concentration and isolation of adenovirus, lentivirus, retrovirus, and adeno-associated virus (AAV).</li>
<li>Optimized workflows that minimize inhibitors and maximize downstream compatibility for fast, reproducible recovery of viral nucleic acids.</li>
<li>Scalable purification options supporting both low-throughput and high-throughput virology, infectious disease, and molecular biology research.</li>
</ul>
&nbsp;
<h2>How to Choose a Spin-Column Viral DNA Extraction Kit</h2>
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Input Sample Volume and Processing Capacity
Most spin-column viral DNA extraction kits accept up to 400 &micro;L of liquid sample per column, with some protocols allowing the same column to be reloaded to process larger total sample volumes. Confirm that your sample type and volume fall within the manufacturer's recommended specifications.
Centrifuge Compatibility
Spin-column purification workflows generally require centrifugation speeds of approximately 10,000 &times; g or greater. Most standard benchtop microcentrifuges used with 1.5&ndash;2 mL tubes can accommodate these requirements, but equipment compatibility should always be verified before implementation.
Elution Buffer Versus Water
Many kits provide the option of eluting DNA with either a storage buffer or DNase/RNase-free water. Elution buffer may be preferable for longer-term storage, while water can be advantageous for downstream applications sensitive to EDTA or other buffer components.
Sample Type Considerations
Spin-column viral DNA extraction kits are optimized primarily for cell-free liquid samples. Protein-rich or solid biological samples may require additional pretreatment steps or may be better served by dedicated genomic DNA extraction kits designed for blood or tissue specimens.
&nbsp;
<h2>Specifications Context</h2>
&nbsp;
The most important performance specifications for spin-column viral DNA extraction kits are sample input capacity and minimum elution volume, as these directly influence DNA concentration and recovery efficiency. A workflow processing several hundred microliters of sample and eluting into a smaller final volume can significantly improve target concentration for downstream qPCR analysis.&nbsp;Many laboratories maintain both spin-column and 96-well plate extraction formats to accommodate varying weekly sample volumes. Spin-column systems offer flexibility and simplicity for smaller studies, while maintaining the DNA quality required for PCR, qPCR, sequencing, and molecular diagnostic applications.
&nbsp;
<a href="https://mbpinc.net/contact-us">Contact the MBP team </a>today to discuss your viral DNA extraction workflow and receive expert guidance on selecting the most suitable spin-column kit for your PCR, qPCR, sequencing, or molecular diagnostics application.

Spin-Column

Lenti virus cocentration reagents

Lentivirus Concentration Reagent (V2001-00) by MBP enables scalable lentiviral concentration without ultracentrifugation equipment. Available in 10 ml (V2001-00), 100 ml (V2001-01), 500 ml (V2001-02), and 2,000 ml (V2001-03) volumes. BSL-2 handling required. Store concentrated virus at &minus;80&deg;C. RUO.

Lenti virus cocentration reagents, 10 mL

Lenti virus cocentration reagents, 100 mL

Lenti virus cocentration reagents, 500 mL

Lenti virus cocentration reagents, 2000 mL

<h2 dir="ltr"> What Are Lentiviral Cloning Vectors?</h2>
 The transfer plasmid is the heart of every lentiviral construct &mdash; it defines the transgene cargo, promoter driving expression, selection marker, and structural LTR elements that enable stable genomic integration. Selecting the right cloning vector backbone is the first and most consequential decision in any lentiviral project.
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li style="font-family: arial, helvetica, sans-serif;">Expression vectors featuring CMV, EF1&alpha;, PGK, and UbC promoter configurations for transgene expression studies</li>
<li>Fluorescent reporter vectors incorporating GFP, RFP, and CFP for cell tracking and visualization</li>
<li>Promoterless vectors for promoter characterization and regulatory element analysis</li>
<li>HA-tag and His-tag expression vectors for protein detection and purification workflows</li>
<li>Bicistronic and tricistronic vector systems for multi-gene expression applications</li>
<li>miRNA- and siRNA-compatible cloning vectors for RNA interference studies</li>
<li>Functional vectors including selectable-marker and HSVtk-based constructs for specialized research applications</li>
</ul>
<h2 dir="ltr"> How to Choose a Lentiviral Cloning Vector</h2>
&nbsp;
Vector Design
Expression vectors, reporter vectors, promoterless systems, tagged constructs, and multicistronic backbones are designed for different experimental objectives. Vector selection should be guided by the intended application, transgene design, and downstream analysis requirements.
Promoter Selection
Promoters influence the strength and pattern of transgene expression. Available vector configurations include CMV, EF1&alpha;, PGK, and UbC promoters, as well as promoterless backbones for studies focused on promoter activity and regulatory elements.
Reporter Requirements
Fluorescent reporters such as GFP, RFP, and CFP enable visualization of transduced cells, monitoring of expression, and assessment of transduction efficiency. Reporter selection should align with the imaging platform and experimental workflow.
Expression Configuration
Single-gene, bicistronic, and tricistronic vector designs provide different levels of flexibility for co-expression studies. Multi-cassette systems can simplify experiments requiring coordinated expression of multiple genes or reporter elements.
Insert Size Considerations
Lentiviral vectors can accommodate relatively large expression cassettes compared with several other viral delivery systems. However, larger inserts may reduce viral production efficiency and should be evaluated during vector design and validation.
<h2 dir="ltr"> Specifications Context</h2>
 Modern research lentiviral vectors are commonly designed with self-inactivating (SIN) long terminal repeats (LTRs), an important biosafety feature that reduces promoter activity within the integrated viral LTR following transduction. Many lentiviral vector systems also incorporate regulatory elements that support efficient transgene expression and vector performance. Vector architecture, promoter selection, reporter configuration, and insert size can all influence downstream cloning, viral production, and expression outcomes. Product availability reflects MBP's catalogue as of mid-2026. 
The search for reliable lentiviral cloning vectors is over. <a href="https://mbpinc.net/contact-us">Contact the expert team</a> at MBP and find the perfect match today.

Cloning Vectors

Selection-Drug Killing Curve

Lenti-Bi-cistronic Vector

LV037 by Applied Biological Materials is a third-generation bicistronic lentiviral vector (10 µg) using a proprietary ~500 bp bidirectional promoter for stronger, more balanced two-gene co-expression than IRES-based systems (&gt;800 bp). Supports up to three-gene tricistronic expression with T2A addition. Shipped on Ice Pack; store at &minus;20°C.