Tubes & Sample Collection

Test Tubes

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

Cap, Snap, 12mm, Dual Position, LDPE, BAG/1000

118120A by Globe Scientific is a 12 mm dual-position LDPE snap cap with a ribbed exterior, designed for both aerobic (loose position) and sealed (leak-resistant position) culture tube applications. The single cap serves both workflow states without cap replacement. Supplied 1,000 per bag; suitable for glass and plastic 12 mm culture tubes in microbiology and clinical lab settings.

Tubes, Caps & Racks Catalog

Lab Supplies for Physicians Offices

Cap, Universal Fit Cap for 12mm, 13mm and 16mm Plastic Tubes

118115A by Globe Scientific is a polyethylene universal snap cap fitting 12 mm, 13 mm, and 16 mm plastic tubes, supplied 1000 caps per bag in 8 colors. A single cap format for multiple tube diameters reduces inventory complexity in labs running blood collection tubes, specimen tubes, and general polystyrene or polypropylene test tubes.

Manufacture

Cap, Universal, Fits most 12mm, 13mm and 16mm tubes, Clear/Natural, CS/10000

Cap, Universal, Fits most 12mm, 13mm and 16mm tubes, Lavender, CS/10000

Cap, Universal, Fits most 12mm, 13mm and 16mm tubes, Gray, CS/10000

Cap, Universal, Fits most 12mm, 13mm and 16mm tubes, Blue, CS/10000

Cap, Universal, Fits most 12mm, 13mm and 16mm tubes, Green, CS/10000

Cap, Universal, Fits most 12mm, 13mm and 16mm tubes, Black, CS/10000

Cap, Universal, Fits most 12mm, 13mm and 16mm tubes, Red, CS/10000

Cap, Universal, Fits most 12mm, 13mm and 16mm tubes, Yellow, CS/10000

Sample Cups

<h2 dir="ltr">What are Automation Sample Cups?</h2>
 Automation sample cups (also called analyzer sample cups, autosampler cups, or J-cups) are small-volume polystyrene or polypropylene vessels designed to hold aliquoted patient specimens for direct loading into automated clinical chemistry analyzers, immunoassay platforms, hematology analyzers, and ICP-MS/ICP-OES spectrometers. They are used when an analyzer's primary tube handler cannot directly aspirate from a standard 15 mL or 50 mL collection tube&mdash;typically because the sample volume is insufficient, a diluted aliquot is required, or a specific cup geometry is mandated by the instrument's sampling needle. Globe Scientific offers the largest selection of alternate (OEM-equivalent) sample cups for laboratory analyzers, providing significant per-cup savings versus manufacturer-supplied consumables. Choose analyzer sample cups by instrument model first&mdash;dimensional compatibility is non-negotiable&mdash;then optimize for material (PS for optical clarity, PP for chemical resistance) and volume.
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<h2 dir="ltr">What you will find:</h2>
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<ul>
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0.2 mL automation sample cups for micro-volume testing
</li>
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0.5 mL sample cups for routine analyzer use
</li>
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1.5 mL sample cups for standard clinical workflows
</li>
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Clear polystyrene sample cups for accurate readings
</li>
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Conical-bottom cups for complete sample pickup
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Low-dead-volume cups for minimal sample waste
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Analyzer-compatible sample cups for clinical systems
</li>
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Disposable sample cups for single-use workflows
</li>
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Nesting cups for easy storage and handling
</li>
</ul>
<h2 dir="ltr"> How to Choose Automation Sample Cups</h2>
 Instrument Compatibility: Dimensional Match is Mandatory Automation sample cups must match the exact outer diameter, height, and cup-bottom geometry specified by the instrument manufacturer. A cup that is 0.5 mm too wide or too narrow will not seat correctly in the autosampler rotor, causing aspiration failures, pipetting errors, or instrument alarms. Globe Scientific engineers and validates each alternate cup to OEM specifications for named analyzer platforms; confirm the instrument model against the catalog's compatibility list before ordering. Volume: 0.5 mL vs. 1.5 mL vs. 2.0 mL 0.5 mL cups (13.55 &times; 24.50 mm, polystyrene) are used on chemistry analyzers including Beckman CX series, Alpha Wassermann, Bio-Chem Labs, and DPC Immulite platforms. 1.5 mL cups (13.8 &times; 22.60 mm) are used on BioMerieux AG-2/ASCA and MLA 1600C platforms. Larger 2.0 mL cups are used on Roche cobas and Horiba ABX platforms. The minimum working volume of the cup must exceed the analyzer's dead volume (typically 150&ndash;400 &micro;L) plus the required sample volume. Material: Polystyrene vs. Polypropylene Polystyrene (PS) sample cups provide excellent optical clarity for colorimetric-based analyzers that photometrically read the cup contents and have low protein adsorption for routine chemistry analytes. Polypropylene (PP) cups are used when the sample contains organic solvents, strong acids (trace element analysis), or when acid-wash protocols are required for ICP-MS autosampler systems. MoldPro and Globe Scientific PP autosampler cups for PerkinElmer, Agilent, and Shimadzu ICP systems are manufactured from virgin PP with ultra-low metal content verified by ICP-MS lot testing. With or Without Caps/Inserts Sample cups with caps are used when the aliquot must be sealed to prevent evaporation or cross-contamination during batch loading. Insert cups (smaller inner cup that sits inside a standard tube) allow aliquoted samples to be loaded directly without relabeling &mdash; a common efficiency gain in high-volume core labs. Confirm whether your instrument's autosampler accepts capped cups or requires open-top formats. ICP-MS vs. Clinical Chemistry Applications ICP-MS autosampler cups require certified ultra-low metal content (verified by ICP-MS at ppb level), manufactured from virgin PP without metal-containing additives, dyes, or fillers. Standard PS clinical chemistry cups contain low-level metal additives from colorants and should not be used for trace element or heavy metal analysis. Always use metal-free certified cups for any elemental analysis application. 
<h2 dir="ltr"> Specifications Context</h2>
 Globe Scientific analyzer sample cups are manufactured to exact OEM specifications and provide equivalent precision and optical properties to original manufacturer cups. PS cups have optical clarity with &ge;90% light transmission in the visible spectrum, required for photometric analyzers. PP ICP-MS autosampler cups meet ultra-low metal content specifications: typically &lt;1 ppb for Fe, Zn, Cu, Pb, Mn, and other analytes commonly measured in trace element panels. Cup dimensions are held to &plusmn;0.1 mm tolerance on O.D. to ensure consistent seating in autosampler rotors. As of 2026, Globe Scientific is the most widely stocked alternate analyzer consumable brand through lab distributors, including MBP, offering per-cup savings of 20&ndash;40% versus OEM pricing for high-volume clinical labs. 
<a href="https://mbpinc.net/contact-us">Contact MBP&nbsp;</a>for per-cup pricing on case-quantity PO orders.

Automation Sample Cups

113132-113133-Analyzer Consumables Catalog

Caps for Sample Cups

113132 by Globe Scientific is a polyethylene (PE) snap cap for Globe multi-purpose sample cups 110610, 110021, 110711, and 110621. The solid-top design snaps firmly in place to contain specimens during collection and transport. Sold in bags of 1000, suited to high-throughput drug testing and clinical specimen workflows.

Cap, Snap, PE, for Sample Cups: 110610, 110021, 110711 & 110621, BAG/1000

Cap, Snap, PE, with Pierceable Cross Cut, for Sample Cups: 110021, 110610, 110621 & 110711, BAG/1000

Centrifuge Bottles

<h2 data-section-id="1x7fdl3" data-start="0" data-end="31">What Are Centrifuge Bottles?</h2>
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Centrifuge bottles are large-volume vessels made from polypropylene copolymer (PPCO) or polypropylene (PP), designed for low- to moderate-speed centrifugation of biological and chemical samples. Available in volumes ranging from 250 mL to 1,000 mL, these bottles feature a bottle-shaped body with either a flat or rounded bottom and are designed to fit swing-bucket and fixed-angle rotors used in preparative centrifuges and floor-standing centrifuge systems.
They are commonly used for large-scale mammalian cell culture harvesting, ammonium sulfate protein precipitation, bacterial cell pelleting, density-gradient separations, and biopharmaceutical process clarification where standard centrifuge tubes do not provide sufficient capacity.
Use centrifuge bottles when processing volumes exceed 250 mL per run and your centrifuge rotor is designed for bottle-format vessels. Always verify fill requirements and rotor compatibility before use.
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<h2 dir="ltr">In this section:</h2>
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250mL Centrifuge Bottles &ndash; The perfect "middle-weight" option for pilot-scale prep and mid-range harvesting.
500mL Centrifuge Bottles &ndash; Our high-capacity workhorses for bulk concentration and large-scale cell separations.
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<h2 data-section-id="152gqj6" data-start="991" data-end="1026">How to Choose Centrifuge Bottles</h2>
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Material: PPCO vs PP
Polypropylene copolymer (PPCO) centrifuge bottles offer enhanced flexibility and impact resistance compared to standard polypropylene. This helps reduce the risk of cracking during repeated autoclaving cycles or accidental handling impacts. PPCO bottles are translucent, allowing users to visually monitor samples without removing bottles from the rotor.
Standard polypropylene bottles provide similar chemical resistance but are generally more rigid. Selection should be based on the application's mechanical and chemical requirements.
Volume Selection: 250 mL, 500 mL, and 1,000 mL
250 mL centrifuge bottles are typically used for process volumes between 200 and 225 mL and are suitable for medium-scale laboratory workflows.
500 mL centrifuge bottles accommodate process volumes of approximately 400&ndash;450 mL and are commonly used for larger culture harvests and clarification procedures.
1,000 mL centrifuge bottles are designed for high-volume applications including bacterial fermentation harvesting, large-scale density-gradient preparation, and manufacturing-scale clarification processes. Because of their larger size, these bottles generally have lower maximum centrifugal force ratings than smaller formats.
Cap Type: Standard Screw Cap vs Sealing Cap
Standard polypropylene screw caps provide reliable leak protection during routine centrifugation and storage applications.
Sealing cap assemblies incorporate additional gasket-based sealing systems that improve containment during higher-speed centrifugation and when handling biohazardous materials. These sealing systems are commonly used when aerosol containment or enhanced sample security is required.
Rotor and Adapter Compatibility
Centrifuge bottles must be matched to compatible rotor systems and adapters. Bottle dimensions, neck designs, and rotor requirements vary by manufacturer and volume. Before purchasing, laboratories should verify compatibility between the bottle, rotor, and any required adapters to ensure safe operation.
Fill Level Requirements
Proper fill volume is critical for safe centrifugation. Most centrifuge bottles should be filled to at least 80% of their total capacity to prevent excessive stress on the bottle walls during centrifugation. Underfilled bottles may deform or collapse under centrifugal force. For some larger formats, maximum fill recommendations may also apply and should be verified with manufacturer specifications.
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<h2 data-section-id="1mxgh1c" data-start="3525" data-end="3561">Compare Centrifuge Bottle Formats</h2>
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250 mL PPCO centrifuge bottles are manufactured from polypropylene copolymer and are typically supplied in packs of four bottles per case. When used with appropriate sealing cap assemblies, they can support significantly higher centrifugal forces than standard-cap configurations.
500 mL PPCO centrifuge bottles provide increased sample capacity for larger-volume processing applications. These bottles are commonly supplied with standard screw caps and are packaged in case quantities of four bottles.
1,000 mL PPCO centrifuge bottles are intended for large-scale harvesting and clarification workflows. Although they provide the highest volume capacity, they generally operate at lower maximum centrifugal force ratings than smaller bottle formats. Packaging typically consists of four bottles per case.
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<h2 data-section-id="1jl751w" data-start="4384" data-end="4409">Specifications Context</h2>
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PPCO centrifuge bottles are manufactured from durable polypropylene copolymer materials that offer excellent chemical resistance, translucency for sample visibility, and compatibility with autoclave sterilization procedures. They are widely used with preparative centrifuge systems, including various fixed-angle and swing-bucket rotor configurations.
As of 2026, MBP supplies centrifuge bottle formats suitable for preparative centrifugation applications. Available volumes, cap assemblies, and compatibility options may vary depending on product line and manufacturer specifications.
Let's make sure your lab has the exact precision tools your research requires. Get a quote from the <a href="https://mbpinc.net/contact-us" style="color: #236fa1; text-decoration: underline;">Molecular Biology Products Inc. team</a> today.

6330-6332 by Globe Scientific are polypropylene centrifuge bottles in 250 mL (SKU 6330, rated to 27,500 × g) and 500 mL (SKU 6332, rated to 4,800 × g) sizes, at 80% fill. Linerless leakproof closure, autoclavable at 121°C, reusable, with excellent chemical resistance. Supplied 4 per bag for low-to-moderate speed centrifugation applications.

Centrifuge Bottle, 250mL, Attached Cap, PP, 4/Bag, CS/36

Centrifuge Bottle, 500mL, Attached Cap, PP, 4/Bag, CS/24

Centrifuge Tubes

<h2>What Are Centrifuge Tubes?</h2>
 Centrifuge tubes are cylindrical laboratory containers with caps that are used to separate, pellet, and store biological or chemical samples through centrifugal force. They are commonly made from polypropylene (PP) or polystyrene (PS) and are available in sizes ranging from small 0.5 mL microtubes to larger 50 mL conical tubes. These tubes are widely used for cell pelleting, protein precipitation, DNA and RNA extraction, tissue homogenate clarification, and long-term sample storage. Depending on the material, they can withstand temperatures from &minus;80 &deg;C to +121 &deg;C.
In short, the best centrifuge tube depends on your centrifuge rotor, required g-force, sample volume, and sterility needs. 
<h2>What You Will Find: </h2>
<ul>
<li><a href="https://mbpinc.net/consumables/centrifuge-tubes/all-centrifuge-tubes" title="All Centrifuge Tubes">All Centrifuge Tubes</a>: Comprehensive selection of 15 mL and 50 mL conical tubes with clear graduations for daily lab workflows.</li>
<li><a href="https://mbpinc.net/consumables/centrifuge-tubes/oak-ridge-style-centrifuge-tubes" title="Oak Ridge Style Centrifuge Tubes">Oak Ridge Style Centrifuge Tubes</a>: High-speed, chemical-resistant tubes designed to withstand extreme RCF without deformation.</li>
<li><a href="https://mbpinc.net/consumables/centrifuge-tubes/centrifuge-bottles" title="Centrifuge Bottles">Centrifuge Bottles</a>: Heavy-duty, larger-capacity vessels engineered for bulk sample processing and high-velocity runs.</li>
<li><a href="https://mbpinc.net/consumables/centrifuge-tubes/large-volume-centrifuge-tubes" title="Large Volume Centrifuge Tubes">Large Volume Centrifuge Tubes</a>: Industrial-strength 250 mL and 500 mL tubes optimized for pilot-scale harvesting and bioprocessing.</li>
</ul>
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<h2>How to Choose Centrifuge Tubes</h2>
 Volume and Rotor Compatibility
Select a tube size that matches both your sample volume and centrifuge rotor. Microtubes ranging from 0.5&ndash;2 mL are commonly used in microcentrifuges and can typically handle speeds up to 20,000 &times; g. Midi tubes in the 5&ndash;10 mL range are suitable for intermediate sample volumes, while 15 mL and 50 mL conical tubes are commonly used in clinical, research, and preparative centrifuges.
Material: Polypropylene vs. Polystyrene
Polypropylene (PP) tubes offer excellent chemical resistance and can tolerate temperatures from &minus;80 &deg;C to +121 &deg;C. They are suitable for autoclaving and exposure to many laboratory solvents. Polystyrene (PS) tubes provide superior optical clarity, making it easier to visually inspect samples and liquid levels, but they have lower resistance to solvents and extreme temperatures.
Sterility and Contamination Control
Sterile centrifuge tubes are typically gamma- or E-beam-irradiated and certified free of RNase, DNase, and pyrogens. These tubes are recommended for RNA extraction, cell culture, and clinical applications where contamination must be minimized. Non-sterile tubes may still be RNase- and DNase-free and are often suitable for routine DNA work and general sample storage.
Cap Design
Attached screw caps help prevent cap mix-ups and sample contamination, especially in high-throughput laboratories. Separate caps can be quicker to open and may be preferred in workflows that require frequent access to samples. If tubes will be used with automated systems, cap dimensions should be verified for compatibility with liquid handling equipment.
Packaging Options
Racked tubes provide convenient organization and allow direct pipetting while the tubes remain in the rack. Bulk-bagged tubes offer a more economical option for laboratories that process large volumes of samples and already have tube storage systems in place.
<h2> Comparing Common Centrifuge Tube Types</h2>
 Microtubes (0.5&ndash;2 mL) are ideal for PCR preparation, microcentrifuge applications, and storage of small sample volumes. They can generally withstand centrifugal forces up to 20,000 &times; g.
Midi tubes (5&ndash;10 mL) are designed for intermediate sample volumes such as culture supernatants and can typically tolerate forces up to 16,000 &times; g.
Sterile 15 mL conical tubes are frequently used for cell pelleting, RNA extraction, and clinical sample processing, with typical ratings between 12,000 and 15,000 &times; g.
Sterile 50 mL conical tubes are commonly selected for larger-volume applications including tissue culture work, density gradient preparation, and large-scale sample processing.
Polystyrene conical tubes in 15 mL and 50 mL formats are often chosen when visual sample inspection is important and solvent exposure is minimal.
<h2> Specifications and Features</h2>
 Polypropylene centrifuge tubes from Globe Scientific and Nest Scientific are manufactured from USP Class VI virgin resin and do not contain plasticizers or processing additives. Sterile products are typically irradiated to achieve a sterility assurance level (SAL) of 10⁻⁶. Most 15 mL tubes feature graduation marks at 1 mL intervals, while 50 mL tubes are usually graduated every 5 mL. MBP offers both bagged and racked centrifuge tube formats, including 15 mL and 50 mL conical tubes as well as smaller microtube and midi tube options.
MBP supports procurement departments by accepting purchase orders and offering institutional pricing for qualified high-volume customers. <a href="https://mbpinc.net/contact-us">Contact the MBP team today</a> for a customized quote.

Centrifuge Tube

Globe Scientific 112009 Quick-Prep™ Urine Centrifuge Tubes are 12 mL polystyrene conical tubes (16 × 100 mm) designed for use with Bayer® urine analyzers, with graduations at 0.5–10 mL and a maximum speed of 1,500 RPM. Supplied non-sterile with unattached white plug caps, case of 1,000.

Centrifuge Tube, 16 x 100mm (12mL), PS, with Separate White Plug Cap, CS/1000

Centrifuge tube, 12mL, Molded Graduations, 16.5 x 107.5mm, PS, 100/Bag, 10 Bags/Case

Sample Storage Container

<h2 dir="ltr">What are Urine Collection Products?</h2>
 Urine collection products for laboratory use are containers and preservative systems designed to collect, stabilize, and transport urine specimens for urinalysis (UA), urine culture (C&amp;S), nucleic acid-based testing (NAAT for STIs), cell-free DNA (cfDNA) liquid biopsy, and 24-hour timed collections. Formats include sterile cups (30&ndash;60 mL), preservative tubes (5&ndash;50 mL), vacuum-draw urine transfer tubes, 24-hour collection containers (2&ndash;3 L), and preservative-prefilled devices for ambient-temperature stabilization of DNA, RNA, and proteins. Choose urine collection products with an active preservative when specimens cannot be processed within 2 hours of collection, when samples must be shipped to a centralized lab, or when nucleic acid integrity over 24+ hours is required.
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<h2 dir="ltr">What you will find:</h2>
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<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

5574-Analyzer Consumables Catalog

Coagulation Cup with Metal Mixing Bar, PS, for use with the Accustasis, CoaData and BFT2 analyzers, BAG/1000

Globe Scientific 5574 — polystyrene coagulation cuvette with metal mixing bar for the Accustasis®, CoaData®, and BFT2® analyzers. Sold in bags of 1,000. Suited for PT, INR, aPTT, and fibrinogen assays in clinical coagulation laboratories.

Cuvettes

<h2 dir="ltr">What are Cuvettes?</h2>
 Cuvettes are small, precision-dimensioned transparent vessels used to hold liquid samples in the light path of a spectrophotometer, fluorometer, or colorimeter for measurement of absorbance, transmittance, fluorescence intensity, or fluorescence polarization. The standard cuvette has a 10 mm optical path length (the distance light travels through the sample), a square or rectangular cross-section, and an internal volume of 1&ndash;4 mL. Cuvettes are manufactured in four main materials&mdash;polystyrene (PS) or polymethylmethacrylate (PMMA) plastic, optical glass, UV-grade quartz (fused silica), and IR quartz&mdash;each covering a different wavelength range. Choose plastic cuvettes for routine visible-light absorbance (380&ndash;780 nm) where disposability prevents cross-contamination; choose optical glass for reusable visible-range work (340&ndash;2,500 nm); choose UV quartz when measurements extend into the UV range below 340 nm (190&ndash;2,500 nm).
&nbsp;
<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li data-section-id="1cg0wqn" data-start="1810" data-end="1862">Spectrophotometer cuvettes for absorbance analysis</li>
<li data-section-id="vbobpt" data-start="1863" data-end="1890">Polystyrene (PS) cuvettes</li>
<li data-section-id="14z5a6i" data-start="1891" data-end="1906">PMMA cuvettes</li>
<li data-section-id="1h4vr7o" data-start="1907" data-end="1966">Analyzer-specific cuvettes for clinical chemistry systems</li>
<li data-section-id="b3k6fl" data-start="1967" data-end="1998">Standard path length cuvettes</li>
<li data-section-id="td8a19" data-start="1999" data-end="2043">Accessories for spectrophotometer cuvettes</li>
</ul>
<h2 dir="ltr"> How to Choose Cuvettes</h2>
 Material and Wavelength Range Plastic (PS/PMMA) cuvettes transmit visible light from 380&ndash;780 nm and are single-use, eliminating cleaning and cross-contamination risk. They are unsuitable for UV measurements, organic solvents, or strong acids. Optical glass cuvettes transmit 340&ndash;2,500 nm, covering the full visible and near-infrared range; Different manufacturers recommend different procedures. UV quartz cuvettes are traditionally used for DNA/RNA quantification at OD260/OD280 because they transmit UV wavelengths below 340 nm. IR quartz extends to 3,500 nm for near-IR applications. Optical Path Length The standard 10 mm path length follows the Beer-Lambert law at normal sample concentrations. Semi-micro (5 mm path) and micro-volume cuvettes (1 mm path, or internal volumes down to 10&ndash;70 &micro;L) are used for precious or limited-volume samples. The path length directly multiplies absorbance: a 1 mm cuvette gives 1/10 the absorbance of a 10 mm cuvette for the same solution &mdash; account for this in Beer-Lambert calculations. Volume: Macro vs. Semi-Micro vs. Micro Macro cuvettes (1&ndash;4 mL) are the standard for routine spectrophotometry. Semi-micro cuvettes (0.5&ndash;1.5 mL) reduce sample consumption. Micro cuvettes (10&ndash;350 &micro;L) are used when sample volume is limited; sub-micro cuvettes (10 &micro;L or less) suit precious clinical or research samples. Confirm that your spectrophotometer's beam height and aperture are compatible with the cuvette format before purchasing micro formats. Two-Window vs. Four-Window Standard cuvettes have two optically clear windows (the light-entry and exit faces) and two frosted or ribbed side walls for gripping. Four-window (all-clear) cuvettes are required for fluorescence measurements at 90&deg; to the excitation beam &mdash; the two additional clear windows allow emitted fluorescence to exit perpendicular to the excitation path. Confirm whether your instrument requires a standard or fluorescence-grade cuvette. Reusable vs. Disposable Quartz and glass cuvettes are reusable; their higher up-front cost&nbsp;is justified for low-throughput precision work or when solvents or UV wavelengths are required. Plastic cuvettes cost fractions of a cent per use and eliminate washing time in high-throughput assay workflows. Select disposable plastic for any routine colorimetric assay (Bradford, BCA, ELISA plate reader backup, OD600 bacterial growth) where wavelengths stay in the visible range. 
<h2 dir="ltr"> Specifications Context</h2>
&nbsp;
The 10 mm path length standard cuvette has internal dimensions of 10 &times; 10 mm cross-section and an internal height of approximately 45 mm. Outer dimensions are 12.5 &times; 12.5 mm, fitting all standard spectrophotometer cell holders. Window parallelism tolerance is &plusmn;0.01 mm for precision quartz cuvettes; standard optical glass cuvettes have &plusmn;0.1 mm tolerance. Light transmission through UV quartz: &gt;90% at 220 nm and &gt;85% at 200 nm. For nucleic acid quantification, a UV quartz cuvette with a minimum path length of 10 mm is required for OD 260/280 measurements; the ratio of OD260/OD280 should be 1.8&ndash;2.0 for pure DNA and 1.9&ndash;2.1 for pure RNA as a purity indicator. As of 2026, plastic disposable cuvettes remain the most cost-efficient choice for labs running &gt;50 absorbance readings per day in the visible range.
&nbsp;
Need the right fit? MBP can guide you to cuvettes that match your workflow perfectly. For institutional pricing and PO-based bulk ordering, <a href="https://mbpinc.net/contact-us" style="color: #236fa1; text-decoration: underline;">contact MBP</a>&nbsp;directly.

5120-Group-Analyzer Consumables Catalog

Cobas Mira Cuvettes

Globe Scientific 5120 are PMMA cuvette segments compatible with Cobas Mira®, Mira S®, Mira Plus®, and Horiba ABX Mira Plus® analyzers. 12-place configuration, individually wrapped, 50 per box, 500 per case. Third-party compatible replacement, not OEM.

COBAS MIRA: Cuvette, for use with Cobas Mira, Mira S, Mira Plus and Horiba ABX Mira Plus analyzers, Individually Wrapped, 50/Box, 10 Boxes/Unit, CS/500

COBAS MIRA: Cuvette, for use with Cobas Mira, Mira S, Mira Plus and Horiba ABX Mira Plus analyzers, Individually Wrapped, 50/Box, 6 Boxes/Unit, CS/300

COBAS MIRA: Cuvette, Racked, for use with Cobas Mira, Mira S, Mira Plus and Horiba ABX changer analyzers, 15/Rack, 30 Racks/Unit, CS/450

6618-Analyzer Consumables Catalog

Cuvette for MLA Electra 620, 650 & 750, PS, BOX/550

Globe Scientific 6618 polystyrene cuvettes for MLA Electra 620, 650, and 750 coagulation analyzers, packaged 550 per box. Direct-fit replacement for Electra analyzer cuvettes. Order at <a href="https://www.mbpinc.net/quickorder">mbpinc.net/quickorder</a> or email customerservice@mbpinc.net.

5107-Group-Analyzer Consumables Catalog

Cuvettes for Ciba Corning 550 Express

Globe Scientific 5107 — polystyrene disposable cuvettes for the Bayer 550 Express and 550 Express Plus (Ciba Corning 550 Express) analyzers, packaged in cartridges with 13 five-place segments for fast loading.

CIBA CORNING: Disposal Bag Units, for use with Ciba Corning 550 Express and Express Plus analyzers, CS/24

CIBA CORNING: Cuvette Tray & 24 Disposal Bags, for use with Ciba Corning 550 Express, Express Plus analyzers and Awareness Technology Chemwell T Analyzer, CS/100

CIBA CORNING: Cuvette Tray Only, for use with Ciba Corning 550 Express and Express Plus analyzers (No Disposal Bags), CS/200

5145-Group-Analyzer Consumables Catalog

Cuvettes for Mindray® BS200 & BS300

5145 by Globe Scientific is a polystyrene cuvette segment for Mindray® BS200 and BS300 chemistry analyzers, individually wrapped. Supplied 1/package, 250/box, 1,000/case. A third-party alternative to OEM Mindray cuvettes for high-volume clinical chemistry labs.

MINDRAY: Cuvette Segment for Mindray BS200 analyzer, 1/pk, 250/Box, 1000/Unit, CS/1000

MINDRAY: Cuvette Segment for Mindray BS300 analyzer, 1/pk, 250/Box, 1000/Unit, CS/1000

Flyer

118118-Tubes, Caps & Racks Catalog

Diamond Culture Tube Cap for Glass Culture Tubes, PP

The 118150B by Globe Scientific is a blue Diamond® DeLong-style polypropylene (PP) culture tube cap for 13 mm glass culture tubes — autoclavable, ridged for grip and controlled gas exchange, and color-coded for sample identification. Packed 100 per bag, 1,000 per carton.

Diamond Culture Tube Cap for 13mm Glass Culture Tubes, PP, Blue, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 13mm Glass Culture Tubes, PP, Blue, 100/Bag

Diamond Culture Tube Cap for 13mm Glass Culture Tubes, PP, Clear, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 13mm Glass Culture Tubes, PP, Clear, 100/Bag

Diamond Culture Tube Cap for 16mm Glass Culture Tubes, PP, Blue, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 16mm Glass Culture Tubes, PP, Blue, 100/Bag

Diamond Culture Tube Cap for 16mm Glass Culture Tubes, PP, Clear, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 16mm Glass Culture Tubes, PP, Clear, 100/Bag

Diamond Culture Tube Cap for 18mm Glass Culture Tubes, PP, Blue, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 18mm Glass Culture Tubes, PP, Blue, 100/Bag

Diamond Culture Tube Cap for 18mm Glass Culture Tubes, PP, Clear, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 18mm Glass Culture Tubes, PP, Clear, 100/Bag

Diamond Culture Tube Cap for 20mm Glass Culture Tubes, PP, Blue, 100/Bag, 5 Bags/Carton

Diamond Culture Tube Cap for 20mm Glass Culture Tubes, PP, Blue, 100/Bag

Diamond Culture Tube Cap for 20mm Glass Culture Tubes, PP, Clear, 100/Bag, 5 Bags/Carton

Diamond Culture Tube Cap for 20mm Glass Culture Tubes, PP, Clear, 100/Bag

Diamond Culture Tube Cap for 25mm Glass Culture Tubes, PP, Blue, 100/Bag, 5 Bags/Carton

Diamond Culture Tube Cap for 25mm Glass Culture Tubes, PP, Blue, 100/Bag

Diamond Culture Tube Cap for 25mm Glass Culture Tubes, PP, Clear, 100/Bag, 5 Bags/Carton

Diamond Culture Tube Cap for 25mm Glass Culture Tubes, PP, Clear, 100/Bag

Diamond Culture Tube Cap for 13mm Glass Culture Tubes, PP, Green, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 13mm Glass Culture Tubes, PP, Green, 100/Bag

Diamond Culture Tube Cap for 13mm Glass Culture Tubes, PP, Red, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 13mm Glass Culture Tubes, PP, Red, 100/Bag

Diamond Culture Tube Cap for 13mm Glass Culture Tubes, PP, Yellow, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 13mm Glass Culture Tubes, PP, Yellow, 100/Bag

Diamond Culture Tube Cap for 16mm Glass Culture Tubes, PP, Green, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 16mm Glass Culture Tubes, PP, Green, 100/Bag

Diamond Culture Tube Cap for 16mm Glass Culture Tubes, PP, Red, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 16mm Glass Culture Tubes, PP, Red, 100/Bag

Diamond Culture Tube Cap for 16mm Glass Culture Tubes, PP, Yellow, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 16mm Glass Culture Tubes, PP, Yellow, 100/Bag

Diamond Culture Tube Cap for 18mm Glass Culture Tubes, PP, Green, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 18mm Glass Culture Tubes, PP, Green, 100/Bag

Diamond Culture Tube Cap for 18mm Glass Culture Tubes, PP, Red, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 18mm Glass Culture Tubes, PP, Red, 100/Bag

Diamond Culture Tube Cap for 18mm Glass Culture Tubes, PP, Yellow, 100/Bag, 10 Bags/Carton

Diamond Culture Tube Cap for 18mm Glass Culture Tubes, PP, Yellow, 100/Bag

Diamond Culture Tube Cap for 20mm Glass Culture Tubes, PP, Green, 100/Bag, 5 Bags/Carton

Diamond Culture Tube Cap for 20mm Glass Culture Tubes, PP, Green, 100/Bag

Diamond Culture Tube Cap for 20mm Glass Culture Tubes, PP, Red, 100/Bag, 5 Bags/Carton

Diamond Culture Tube Cap for 20mm Glass Culture Tubes, PP, Red, 100/Bag

Diamond Culture Tube Cap for 20mm Glass Culture Tubes, PP, Yellow, 100/Bag, 5 Bags/Carton

Diamond Culture Tube Cap for 20mm Glass Culture Tubes, PP, Yellow, 100/Bag

Diamond Culture Tube Cap for 25mm Glass Culture Tubes, PP, Green, 100/Bag, 5 Bags/Carton

Diamond Culture Tube Cap for 25mm Glass Culture Tubes, PP, Green, 100/Bag

Diamond Culture Tube Cap for 25mm Glass Culture Tubes, PP, Red, 100/Bag, 5 Bags/Carton

Diamond Culture Tube Cap for 25mm Glass Culture Tubes, PP, Red, 100/Bag

Diamond Culture Tube Cap for 25mm Glass Culture Tubes, PP, Yellow, 100/Bag, 5 Bags/Carton

Diamond Culture Tube Cap for 25mm Glass Culture Tubes, PP, Yellow, 100/Bag

<h2 data-section-id="1k6o3gy" data-start="0" data-end="50">What Are Midicentrifuge Tubes (5 mL and 10 mL)?</h2>
&nbsp;
Midicentrifuge tubes are polypropylene conical tubes available in 5 mL and 10 mL capacities, designed for laboratory workflows that require sample volumes larger than standard microtubes but smaller than traditional 15 mL conical tubes. These tubes provide an efficient solution for intermediate-volume applications and are commonly used in cell culture, protein purification, gradient fraction collection, virus concentration, and clinical specimen processing.
By filling the gap between 2 mL microcentrifuge tubes and 15 mL conical tubes, midi tubes help optimize sample handling and centrifugation efficiency while reducing unnecessary tube volume and excess headspace.
Midicentrifuge tubes are ideal for sample volumes between approximately 2 mL and 12 mL, especially when a 15 mL conical tube is too large for the application or incompatible with the available rotor setup.
&nbsp;
<h2 dir="ltr">What you will find in this section:</h2>
&nbsp;
<ul>
<li dir="ltr" aria-level="1">Sterility options: Sterile (for sensitive work) &amp; Non-sterile (for routine use)</li>
</ul>
<ul>
<li dir="ltr" aria-level="1">
Bag packed: Economical, space-saving
</li>
<li dir="ltr" aria-level="1">
Racked: Organized, ready-to-use
</li>
</ul>
<ul>
<li dir="ltr" aria-level="1">
Attached screw cap: No mix-ups, convenient
</li>
<li dir="ltr" aria-level="1">
Assembled screw cap: Pre-fitted, time-saving
</li>
<li dir="ltr" aria-level="1">
Separate screw cap: Flexible handling for workflows
</li>
</ul>
&nbsp;
<h2 data-section-id="1vogm0p" data-start="945" data-end="982">How to Choose Midicentrifuge Tubes</h2>
&nbsp;
Selecting the Appropriate Volume
The choice between 5 mL and 10 mL tubes depends on the volume of your samples and workflow requirements.
5 mL midi tubes are well suited for applications involving smaller sample volumes, typically below 4.5 mL. They minimize excess headspace and can improve pellet formation during lower-speed centrifugation procedures.
10 mL midi tubes are commonly used for larger intermediate-volume applications, including culture supernatant collection, protein purification workflows, and virus concentration protocols requiring volumes between 6 mL and 10 mL.
Rotor Compatibility
Before purchasing midi tubes, verify that your centrifuge rotor or adapter system is designed to accommodate 5 mL or 10 mL formats. While many benchtop centrifuges support these tubes through dedicated adapters, compatibility varies by manufacturer and rotor model.
The standard dimensions of Globe Scientific 10 mL centrifuge tubes are compatible with many commonly used conical tube adapters found in research and clinical laboratories.
Sterility and Cap Design
Sterile midi tubes with attached screw caps are recommended for cell culture, clinical specimens, and applications where contamination control is essential. Attached caps also reduce the risk of sample mix-ups and accidental contamination.
Non-sterile tubes with separate caps may offer a more economical option for routine laboratory procedures where sterility is not required.
Packaging Considerations
Most midi tubes are supplied in bagged packaging rather than racks. A common configuration includes 100 tubes per bag, making them suitable for laboratories that process moderate to high sample volumes. Reviewing expected usage rates can help determine appropriate ordering quantities and inventory levels.
&nbsp;
<h2 data-section-id="um8esp" data-start="2800" data-end="2829">Compare Midi Tube Variants</h2>
&nbsp;
10 mL Polypropylene Midi Tubes with Attached Screw Caps These sterile tubes are commonly used for clinical specimens, cell culture supernatants, and protein purification workflows. The attached cap design enhances sample security and handling convenience.
5 mL Polypropylene Midi Tubes with Attached Caps Available in sterile and non-sterile formats, these tubes are suitable for gradient fraction collection, low-volume sample preparation, and intermediate-volume centrifugation procedures.
Non-Sterile Midi Tubes with Separate Caps Designed for routine laboratory applications where contamination control is less critical, these tubes provide a cost-effective option for general-purpose centrifugation workflows.
&nbsp;
<h2 data-section-id="1ezckh3" data-start="3567" data-end="3597">Specifications and Features</h2>
&nbsp;
Globe Scientific midicentrifuge tubes are manufactured from high-quality polypropylene and are certified RNase-free and DNase-free. The conical-bottom design promotes efficient sample recovery and pellet formation, while the polypropylene construction provides excellent chemical resistance and temperature stability from &minus;80 &deg;C to +121 &deg;C.
Sterile 10 mL Globe Scientific tubes are supplied with attached screw caps and are commonly packaged with 100 tubes per bag. Globe Scientific operates under ISO 9001:2015 quality standards to ensure consistent manufacturing and product performance.
MBP carries Globe Scientific 10 mL midicentrifuge tubes and may offer additional 5 mL options depending on current inventory availability.
Have questions about the best fit for your workflow?&nbsp;<a href="https://mbpinc.net/contact-us">Contact the Molecular Biology Products Inc. team </a>for a quick quote.

Midicentrifuge Tubes (5ml & 10ml)

<h2 data-section-id="155qizo" data-start="0" data-end="33">What Are All Centrifuge Tubes?</h2>
&nbsp;
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.
&nbsp;
What you will find:
&nbsp;
<ul>
<li dir="ltr" aria-level="1">
<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.
</li>
<li dir="ltr" aria-level="1">
<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.
</li>
<li dir="ltr" aria-level="1">
<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.
</li>
<li dir="ltr" aria-level="1">
<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.
</li>
<li dir="ltr" aria-level="1">
<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.
</li>
</ul>
&nbsp;
<h2 data-section-id="1f93yys" data-start="914" data-end="963">How to Choose From All Centrifuge Tube Formats</h2>
&nbsp;
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.
&nbsp;
<h2 data-section-id="urfo3f" data-start="2395" data-end="2433">Compare Centrifuge Tube Size Groups</h2>
&nbsp;
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.
&nbsp;
<h2 data-section-id="1ezckh3" data-start="3318" data-end="3348">Specifications and Features</h2>
&nbsp;
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

Diamond Midi 5mL Screw Cap Centrifuge Tubes

111580 by Globe Scientific are Diamond™ Midi 5 mL PP Screw Cap Centrifuge Tubes — rated to 25,000 × g, RNase-free, DNase-free, pyrogen-free, optimized for 2–5 mL sample volumes. Available sterile and non-sterile.

Diamond Midi Centrifuge Tube, 5.0mL, PP, Separate Red Screw Cap, Graduated, 100 of Each/Bag, 5 Bags of Each/Carton, CS/500

Diamond Midi Centrifuge Tube, 5.0mL, PP, Separate Blue Screw Cap, Graduated, 100 of Each/Bag, 5 Bags of Each/Carton, CS/500

Diamond Midi Centrifuge Tube, 5.0mL, PP, Assembled Red Screw Cap, Graduated, STERILE, 25/Cardboard Rack, 20 Racks/Unit, CS/500

Diamond Midi Centrifuge Tube, 5.0mL, PP, Assembled Blue Screw Cap, Graduated, STERILE, 25/Cardboard Rack, 20 Racks/Unit, CS/500

Diamond Midi Centrifuge Tube, 5.0mL, PP, Assembled Red Screw Cap, Graduated, STERILE, 20/Bag, 10 Bags/Unit, CS/2000

Diamond Midi Centrifuge Tube, 5.0mL, PP, Assembled Blue Screw Cap, Graduated, STERILE, 20/Bag, 10 Bags/Unit, CS/2000

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