Brands

Universal Centrifuge Accessories

<h2>What Are Universal Centrifuge Accessories?</h2>
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Universal centrifuge accessories are the interchangeable components that determine the range of applications a universal centrifuge can perform. These include swing-out rotor buckets for blood tubes, conical tubes, microplates, and large bottles; fixed-angle rotors for high-speed pelleting; hematocrit and cytospin rotors; tube adapters; and aerosol-tight bio-containment lids. Selecting the appropriate accessories allows a single centrifuge to support multiple laboratory workflows efficiently and safely.
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<h2 dir="ltr">What you will find:</h2>
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Tube adapters and inserts for compatibility with multi-volume samples&nbsp;
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Fixed-angle and swing-out rotors for varied centrifugation applications
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Lids and sealed buckets for safe and reliable operations
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PCR adapters and microplate carriers for high-throughput workflows
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Centrifuge tubes, holders, and supporting aids for efficient and complete setups
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<h2>How to Choose Universal Centrifuge Accessories</h2>
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Swing-Out Bucket Selection by Application
Choose swing-out buckets according to the sample formats used in your laboratory. Blood tube buckets support routine clinical applications, conical tube buckets are suitable for cell culture and molecular biology, microplate carriers enable high-throughput workflows, and large-bottle carriers accommodate large-volume sample processing.
Fixed-Angle Rotors
Fixed-angle rotors provide higher centrifugal forces for microtube, PCR tube, and small-volume sample processing. Ensure that both the rotor and centrifuge motor specifications support the required operating speeds and sample formats.
Cytospin Clip Rotors
Cytospin rotors are designed for preparing microscope slides from low-cellularity samples such as body fluids. Verify compatibility with the required funnel sizes and use bio-containment features when processing potentially infectious materials.
Bio-Containment Lids
Aerosol-tight lids help contain biological samples during centrifugation and support safe laboratory practices. Regular inspection of sealing components and O-rings ensures reliable containment and long-term performance.
Reducing Adapter Inserts
Adapter inserts allow smaller tubes to fit securely within larger bucket positions. Using properly matched adapters improves balance, prevents movement during operation, and helps maintain consistent centrifugation results.
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<h2>Specifications Context</h2>
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Modern universal centrifuge systems support interchangeable accessory configurations that enable rapid transitions between clinical, research, cell culture, and cytology workflows. Swing-out buckets, fixed-angle rotors, and microplate carriers provide flexibility while maintaining compatibility with a broad range of vessel formats.
Routine inspection and maintenance of accessories, including adapters, lids, and sealing components, help ensure safe operation and extend equipment lifespan. Advances in bio-containment systems and modular rotor designs continue to improve laboratory efficiency and versatility.
Time to upgrade your universal centrifuge accessories. <a href="https://mbpinc.net/contact-us">Contact the expert team </a>of Molecular Biology Products Inc. (MBP) and the find perfect match today.

500ml conical (Corning) insert, 2/pk.

The Z446-750-A500 by Hermle is a 500 ml conical (Corning) insert for the Z446-750 swing-out rotor on the Hermle Z446 and Z446-K centrifuges. Max 4,000 rpm / 3,130 × g (Z446) or 4,500 rpm / 3,961 × g (Z446-K). Max radius 17.5 cm. Sold in a 2-pack for large-volume cell harvest, clarification, and precipitation applications.

Manufacture

500ml conical insert for Z496-1000-RBUK, 2/pk *must be used with Z446-750-A500

The Z496-1000-A500C by Hermle is a 500 ml conical tube insert (2/pk) for the Z496-1000-RBUK rectangular bucket on the Z496-1000-AC swing-out rotor. Max 4,200 rpm / 3,964 xg. Must be used with Z446-750-A500 adapter. Supports large-volume cell harvesting and bioprocessing applications on the Hermle Z496 / Z496-K centrifuge platform.

500ml flat bottle, 69.5mm dia insert for Z496-1000-1L 2/pk

The Z496-1L-A500S by Hermle is a 500 mL flat bottle insert (69.5 mm diameter) for the Z496-1000-1L round bucket on the Hermle Z496-K floor centrifuge. Maximum speed 4,600 rpm / 5,203 × g. Sold in a 2-pack. Enables large-volume preparative centrifugation for cell harvest, plasma preparation, and protein clarification at the 500 mL scale.

500ml insert for Z496-1000-RBUK 2/pk

Z496-1000-A500 by Hermle / Benchmark Scientific is a 500&nbsp;ml insert for the Z496-1000-RBUK rectangular bucket on the Z496-1000 swing-out rotor of the Hermle Z496-K Ultra High-Volume Floor Centrifuge, sold 2 per pack. It reduces the 1,000&nbsp;ml bucket to a 500&nbsp;ml working volume — suited for blood banking, large-scale cell harvesting, and bioprocess clarification.

15ml & 50ml Centrifuge Tubes

<h2 data-section-id="155qizo" data-start="0" data-end="33">What Are All Centrifuge Tubes?</h2>
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The All Centrifuge Tubes collection includes the complete range of tube sizes commonly used in research, clinical, and laboratory environments. These tubes range from small 0.5 mL and 1.5&ndash;2 mL microtubes used in microcentrifuge applications to 5 mL and 10 mL midi tubes for intermediate sample volumes, as well as 15 mL and 50 mL conical tubes designed for cell culture, density gradient preparation, and larger-volume sample processing. They are available in polypropylene (PP) for enhanced chemical resistance and temperature tolerance or polystyrene (PS) for improved optical clarity.
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What you will find:
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<a href="https://mbpinc.net/consumables/centrifuge-tubes/all-centrifuge-tubes/microcentrifuge-tubes" title="Microcentrifuge Tubes">Microcentrifuge Tubes</a> &ndash; Precision-engineered for small-volume sample preparation.
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<a href="https://mbpinc.net/consumables/centrifuge-tubes/all-centrifuge-tubes/screw-cap-tubes" title="Screw Cap Tubes">Screw Cap Tubes</a> &ndash; Secure, leak-proof closures for long-term storage and transport.
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<a href="https://mbpinc.net/consumables/centrifuge-tubes/all-centrifuge-tubes/15ml-and-50ml-centrifuge-tubes" title="15ml &amp; 50ml Centrifuge Tubes">15ml &amp; 50ml Centrifuge Tubes</a> &ndash; Standard conical bottom tubes for large-volume processing.
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<a href="https://mbpinc.net/consumables/centrifuge-tubes/all-centrifuge-tubes/midicentrifuge-tubes-5ml-and-10ml" title="Midicentrifuge Tubes (5ml &amp; 10ml)">Midicentrifuge Tubes (5ml &amp; 10ml)</a> &ndash; The perfect bridge for intermediate sample sizes.
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<a href="https://mbpinc.net/consumables/centrifuge-tubes/all-centrifuge-tubes/microtubes-box" title="Microtubes Box">Microtubes Box</a> &ndash; Durable storage racks for organized sample management and protection.
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<h2 data-section-id="1f93yys" data-start="914" data-end="963">How to Choose From All Centrifuge Tube Formats</h2>
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Volume and Rotor Compatibility
Selecting the correct tube size is essential for safe and efficient centrifugation. Microtubes ranging from 0.5&ndash;2 mL are designed for microcentrifuges, while 5&ndash;10 mL midi tubes fit compatible benchtop centrifuge rotors. Larger 15 mL and 50 mL conical tubes are commonly used in clinical and research centrifuges. Always verify rotor compatibility before introducing a new tube format into your workflow.
Sterility Requirements
For sensitive applications such as RNA extraction, cell culture, and clinical diagnostics, sterile tubes certified free of RNase, DNase, and pyrogens are recommended. Non-sterile tubes can provide a cost-effective solution for routine DNA analysis, protein assays, and general sample storage where sterility is not critical.
Material Selection
Polypropylene tubes offer excellent durability, can be autoclaved at 121 &deg;C, and resist many laboratory chemicals and solvents. Polystyrene tubes provide superior transparency, making it easier to monitor liquid levels and sample contents, although they are less resistant to heat and solvents.
Packaging and Inventory Planning
Microtubes are commonly available in pack sizes ranging from 500 to 1,000 units, while 15 mL and 50 mL conical tubes are often supplied in cases of 500. Laboratories with consistent usage may benefit from establishing recurring purchase orders to ensure uninterrupted supply.
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<h2 data-section-id="urfo3f" data-start="2395" data-end="2433">Compare Centrifuge Tube Size Groups</h2>
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Microtubes (0.5&ndash;2 mL) are primarily used for PCR preparation, microcentrifuge applications, and storage of small sample volumes. These are typically manufactured from polypropylene and are available in pack sizes of 500&ndash;1,000 units.
Midi tubes (5&ndash;10 mL) support intermediate-volume centrifugation and supernatant collection. They are commonly made from polypropylene and supplied in packs ranging from 100&ndash;500 units.
15 mL conical tubes are widely used for cell pelleting, RNA isolation, and clinical sample processing. They are available in both polypropylene and polystyrene formats and are generally packaged in cases of 500.
50 mL conical tubes are designed for larger-volume workflows, including tissue culture, density gradient preparation, and sample processing. Like 15 mL tubes, they are available in polypropylene and polystyrene and are commonly sold in cases of 500.
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<h2 data-section-id="1ezckh3" data-start="3318" data-end="3348">Specifications and Features</h2>
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Globe Scientific and Nest Scientific centrifuge tubes are manufactured from USP Class VI virgin polypropylene or polystyrene resin and are certified free from detectable RNase, DNase, and pyrogens. Sterile products are irradiated using gamma or E-beam methods to achieve a sterility assurance level (SAL) of 10⁻⁶. MBP offers both racked and bagged formats for 15 mL and 50 mL conical tubes, along with dispenser-box options for selected microtube product lines that support efficient use in high-throughput laboratory environments.
For procurement teams, MBP accepts purchase orders and offers institutional pricing for bulk and high-volume purchases. <a href="https://mbpinc.net/contact-ushttps://mbpinc.net/contact-us" title="Contact the MBP team" style="color: #236fa1;">Contact the MBP team</a> today to learn more

All Centrifuge Tubes

Tubes, Caps & Racks Catalog

50mL Centrifuge Tubes with Red Caps

6240 by Globe Scientific are 50&#160;mL polypropylene centrifuge tubes with attached flat-top, plug-seal, leak-resistant red HDPE caps. Rated to 10,000&#160;×&#160;g; 17&#160;×&#160;100&#160;mm conical-bottom, self-standing format; white printed graduation marks. Sterile variants are RNase-free and DNase-free. Sold in cases of 500 tubes (25/bag, 20 bags/case).

Centrifuge Tube, 50mL, with Attached Red Screw Cap, PP, Printed Graduations, 25/Bag, 20 Bags/Unit, CS/500

Centrifuge Tube, 50mL, with Attached Red Screw Cap, PP, Printed Graduations, STERILE, 25/Bag, 20 Bags/Unit, CS/500

Centrifuge Tube, 50mL, with Attached Red Screw Cap, PP, Printed Graduations, STERILE, 25/Rack, 20 Racks/Unit, CS/500

Centrifuge Tube, 50mL, with Separate Red Screw Cap, PS, Printed Graduations, CS/500

Centrifuge Tube, 50mL, with Attached Red Screw Cap, PS, Printed Graduations, STERILE, 25/Bag, 20 Bags/Unit, CS/500

Transport Tubes

<h2 dir="ltr">What are Transport Tubes?</h2>
 Transport tubes are sterile, leak-proof screw-cap tubes used for collecting, transporting, and temporarily storing biological specimens from the collection site to the testing laboratory. They span a broad category: empty specimen containers (15 mL and 50 mL self-standing conical tubes), pre-filled saline transport tubes, UTM (Universal Transport Medium) tubes, and specialty specimen vials. All transport tubes share three required attributes&mdash;leak-proof construction, sterility confirmation, and compatibility with the downstream assay's matrix requirements. Choose the transport tube type based on the specimen, the target analyte, and the assay platform it will be processed on. 
<h2 dir="ltr">What you will find:</h2>
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<ul>
<li dir="ltr" role="presentation">5 mL transport tubes for routine sample movement</li>
<li dir="ltr" role="presentation">10 mL tubes for higher volume biological samples</li>
<li dir="ltr" role="presentation">Leak-tight screw-cap tubes for secure handling</li>
<li dir="ltr" role="presentation">Sterile transport tubes for clinical workflows</li>
<li dir="ltr" role="presentation">Graduated tubes with labeling surfaces for tracking</li>
<li dir="ltr" role="presentation">Self-standing tubes for easier bench organization</li>
</ul>
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<h2 dir="ltr">How to Choose Transport Tubes</h2>
 Material: Polypropylene (PP) vs. Polystyrene (PS) PP conical transport tubes are chemical-resistant, autoclavable, and certified DNase/RNase-free in molecular-grade formats. PS transport tubes (30 mL translucent format, Globe Scientific) are lighter and less expensive but not autoclavable. For nucleic acid work, DNA/RNA-free certified PP is the standard. For specimen transport requiring centrifugation, PP is preferred due to higher g-force tolerance (PP rated to &ge;10,000 &times; g in most formats). Self-Standing vs. Rack Format Self-standing (skirted-base) conical tubes stand upright without a rack, reducing knock-over risk during aliquoting and transport. Rack-based tubes require a separate holder. Globe Scientific self-standing 50 mL PP transport tubes feature a printed graduation, white frosted writing area, and are available sterile, non-sterile, or metal-free. Sterile tubes are RNase/DNase-free and pyrogen-free per the lot certificate. Sterile vs. Non-Sterile Sterile tubes (ISO 11137 radiation sterilization, SAL 10⁻⁶) are required for culture, NAAT, and any specimen where contamination would invalidate the result. Non-sterile metal-free PP tubes are suited to trace-element analysis and environmental sampling where sterility is not required but metal contamination would interfere. Volume 15 mL tubes are standard for most clinical specimen aliquots, urine transfers, and culture setups. 50 mL tubes are used for higher-volume specimens (24-hour urine aliquots, stool homogenates, bulk transport of tissue homogenates). Globe Scientific 30 mL tubes with integral spoon are designed specifically for fecal specimen self-collection. Media and Additives Empty transport tubes (no fill) are the base format; select a pre-filled tube (saline, UTM, boric acid) based on the specimen type and analyte stability requirements. For nucleic acid targets, pre-filled tubes with DNA/RNA Shield, UTM, or saline are the appropriate formats. 
<h2 dir="ltr"> Specifications Context</h2>
 Globe Scientific self-standing 50 mL conical transport tubes are manufactured from USP Class VI medical-grade PP with a conical bottom skirt for freestanding stability. Printed graduation marks (1 mL intervals) and a frosted writing area are standard features. Sterile versions are individually wrapped and certified RNase-free, DNase-free, and pyrogen-free per lot certificate, consistent with ISO 9001:2015 manufacturing standards. Non-sterile metal-free versions are supplied with a separate natural screw cap and are tested for trace metals via ICP-MS before lot release. MBP's transport tubes catalog includes Globe Scientific and NEST Scientific formats in multiple pack sizes (25/bag and bulk packs of 500). 
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If you need help choosing tube size or matching the right transport format to your workflow,<a href="https://mbpinc.net/contact-us" style="color: #236fa1; text-decoration: underline;"> the MBP team</a> can help you sort it out without overthinking it.

Transport Tube Products

50mL Self-Standing Transport Tube

6255 by Globe Scientific — 50 mL polypropylene self-standing transport tube with separate red HDPE screw cap. Non-sterile, 30 &times; 115 mm, 5000 RPM rated, autoclavable (without cap), printed graduations. 25/bag, 500/cs.

Transport Tube, 50mL, with Separate Red Screw Cap, PP, Printed Graduations, Conical Bottom, Self-Standing, CS/500

Transport Tube, 50mL, with Separate Natural Screw Cap, PP, Printed Graduations, Conical Bottom, Self-Standing  ** METAL-FREE **, CS/500

Transport Tube, 50mL, with Attached Red Screw Cap, PP, Printed Graduations, Conical Bottom, Self-Standing, STERILE, 25/Bag, 20 Bags/Unit, CS/500

High Volume Centrifuge Tubes

<h2 data-section-id="hcowtr" data-start="0" data-end="45">What Are 15 mL and 50 mL Centrifuge Tubes?</h2>
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15 mL and 50 mL centrifuge tubes are conical-bottom vessels in polypropylene (PP) or polystyrene (PS), the two most commonly used tube formats in research and clinical laboratories worldwide. The 15 mL tube is the standard for cell pelleting, RNA isolation, small-scale protein purification, and clinical sample preparation. The 50 mL tube handles larger culture volumes, gradient preparation, tissue homogenate clarification, and bulk precipitation steps. Both formats from Globe Scientific and Nest Scientific are rated to 12,000&ndash;15,000 &times; g in a supported rotor.
15 mL for cell and molecular workflows under 12 mL; 50 mL for culture volumes, gradients, and any prep where a 15 mL conical runs out of headroom.
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<h2 dir="ltr">What you will find:</h2>
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<li>Attached flat top screw cap: Leak-proof, one-hand use</li>
<li>Racked: Pre-organized for high-throughput</li>
<li>Self-standing: Stable skirted base</li>
<li>Sterile: For contamination-sensitive work</li>
<li>Non-sterile: General, cost-effective use</li>
<li dir="ltr" role="presentation">Bulk: High-volume, economical</li>
<li dir="ltr" role="presentation">Racked: Organized &amp; ready-to-use</li>
<li dir="ltr" role="presentation">PS racked: Extra stability with polystyrene racks</li>
</ul>
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<h2 data-section-id="1j0vxh6" data-start="772" data-end="821">How to Choose 15 mL and 50 mL Centrifuge Tubes</h2>
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Material: PP vs PS
Polypropylene tubes (Globe Scientific, Nest Scientific) are resistant to most organic solvents, stable from &minus;80 &deg;C to +121 &deg;C, and autoclavable. Polystyrene tubes offer greater optical clarity &mdash; the tube wall is transparent enough to read the sample meniscus and assess pellet quality without removing the tube from the rack. Choose PS when visual inspection is a workflow step; choose PP for all other applications.
Sterility Grade
Sterile tubes (gamma- or E-beam-irradiated, RNase-free, DNase-free, non-pyrogenic) are required for RNA work, primary cell culture, and clinical sample handling. Non-sterile, DNase/RNase-free tubes are appropriate and more cost-effective for DNA extractions, protein assays, and general preparative spins.
Cap Style: Flat-Top vs Plug-Seal
Flat-top screw caps (high-density polyethylene, HDPE) provide a flat writing surface for sample labeling and a double-threaded design that reduces cross-threading in high-throughput workflows. Plug-seal screw caps (HDPE or PP) create a secondary internal seal for leak-prone applications. Attached caps come pre-assembled on sterile tubes; separate caps are standard on non-sterile tubes.
Pack Format: Racked vs Bagged
Racked tubes (foam or PS rack, 50 &times; 15 mL or 25 &times; 50 mL per rack, 500 per case) allow direct pipetting without removing tubes and enable viewing of graduations without disturbing the rack. Bagged tubes (25 or 50 per bag, 500 per case) offer a lower cost per tube and suit labs with robotic liquid handlers or in-house racking systems.
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<h2 data-section-id="up19i6" data-start="2392" data-end="2431">Compare 15 mL and 50 mL Tube Options</h2>
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Globe Scientific 15 mL polypropylene tubes with flat-top blue caps are available in both sterile and non-sterile formats with attached or separate caps. These tubes can be purchased in racked or bagged packaging configurations, with 500 tubes per case, and are rated to withstand centrifugal forces up to 15,000 &times; g.
Globe Scientific 15 mL polystyrene tubes with red caps provide enhanced optical clarity for visual sample inspection and are available in sterile and non-sterile versions. They are supplied with attached or separate caps, offered in racked or bagged formats, and rated up to 12,000 &times; g.
Globe Scientific 50 mL polypropylene tubes with flat-top blue caps are designed for larger-volume centrifugation workflows. Available in sterile and non-sterile configurations with attached or separate caps, these tubes are supplied in racked or bagged packaging and can withstand centrifugal forces up to 15,000 &times; g.
Globe Scientific 50 mL polystyrene tubes with red caps combine large-volume capacity with excellent transparency for easy sample visualization. They are available in sterile and non-sterile formats, supplied with attached or separate caps, packaged either racked or bagged, and rated up to 12,000 &times; g.
Nest Scientific 15 mL polypropylene tubes are supplied sterile with attached caps and packaged in polystyrene racks containing 500 tubes per case. These tubes are rated to 12,000 &times; g and are commonly used in cell culture, clinical, and molecular biology applications.
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<h2 data-section-id="1jl751w" data-start="3950" data-end="3975">Specifications Context</h2>
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Globe Scientific 15 mL and 50 mL centrifuge tubes are molded from USP Class VI virgin polypropylene or polystyrene, certified RNase-free, DNase-free, and non-pyrogenic by lot. The 15 mL PP tube is rated to 15,000 &times; g; 50 mL PP tubes to 15,000 &times; g in a supported rotor. Graduated markings on 15 mL tubes read every 1 mL (with sub-milliliter graduations below 1 mL); 50 mL tubes every 5 mL. Globe Scientific is ISO 9001:2015 certified. As of 2026, MBP stocks flat-top (blue cap) and plug-seal (red cap) variants in PP and PS, with sterile and non-sterile options available.
Ensure your high-speed separations remain consistent and safe by choosing tubes built for extreme RCF ratings. <a href="https://mbpinc.net/contact-us" style="color: #236fa1; text-decoration: underline;">Contact the Molecular Biology Products Inc. team</a> for a quote.

DataSheet

50ml Mini Reactor Tubes 

788211 by NEST Scientific is a 50 mL mini bio-reactor tube for small-scale suspension cell culture and bioreactor seeding. The 0.22 µm vented cap enables sterile gas exchange on a tube shaker; the conical PP/HDPE construction fits standard 50 mL centrifuge rotors. RNase/DNase-free, sterile, 10/pk, 100/cs.

Manufacturer

50ml conical bottom insert for Z327-200-BUK, 2/pk

Z327-200-A50 by Benchmark Scientific (Hermle) is a 2-pack of 50 ml conical-bottom tube inserts for the Z327-200-BUK swing-out rotor, compatible with Hermle Z307 and Z327 Universal Centrifuges. These inserts seat standard 50 ml conical tubes (BD Falcon, Corning, and equivalent formats) for cell pelleting, plasma preparation, and molecular biology applications.

50ml conical insert for 500ml rotor, 2/pk.

The Z446-500-A50 by Hermle is a 2-pack of 50 ml conical tube inserts for the Hermle Z446-04500 fixed-angle rotor (4 x 500 ml), enabling 50 ml tube processing at up to 8,000 rpm / 10,367 xg on the Z446 centrifuge series.

50ml conical insert for 85ml rotor, 2/pk.

Z326-85-A50 by Benchmark Scientific is a 50 ml conical tube insert for the 6 × 85 ml high-speed fixed-angle rotor on Hermle Z326 and Z366 centrifuges, enabling standard 50 ml conical tube runs in the larger 85 ml rotor pockets. Supplied as 2 inserts per pack.

50ml conical insert for Z306-100 2/pk.

Z306-100-A50 by Hermle is a 50 ml conical tube insert for the Z306-100 swing-out rotor, sold 2 per pack. Enables standard 50 ml conical tube centrifugation on the Hermle Z306 and Z326 universal centrifuges for cell culture pelleting, clinical sample prep, and bulk precipitation workflows.

50ml conical inserts for Z326-100H rotor, 2/pk.

Z326-100H-A50 by Hermle is a 2-pack of 50 ml conical tube inserts for the Z326-100H hermetically sealed 4 × 100 ml swing-out rotor, compatible with the Hermle Z306, Z32-HK, and Z326 universal centrifuges. Hermetic sealing prevents aerosol release during centrifugation of infectious or hazardous 50 ml samples at up to 5,000 RPM / 3,885 × g (Z326) or 4,000 RPM / 2,486 × g (Z306).