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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<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
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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>

110158-Group-Tubes, Caps & Racks Catalog

Plastic Tubes with Dual Position Snap Cap

Globe Scientific 110158 — sterile 17×100 mm culture tube with attached dual-position LDPE snap cap. Loose position allows aerobic gas exchange; sealed position closes for anaerobic culture or transport. Available in polystyrene (1,500 RPM max) or polypropylene (3,000 RPM, autoclavable, freezable). Pack of 25 per bag, 500 per case.

Manufacture

Culture Tube, 17 x 100mm (15mL), PS, STERILE, Attached Dual Position Cap, 25/Bag, 20 Bags/Unit, CS/500

Culture Tube, 17 x 100mm (15mL), PP, STERILE, Attached Dual Position Cap, 25/Bag, 20 Bags/Unit, CS/500

Tubes, Caps & Racks Catalog

Lab Supplies for Physicians Offices

Plug Caps for Test Tubes

116132 by Globe Scientific is a 16 mm high-grip white polyethylene (PE) plug cap for test tubes. The friction-fit design enables quick batch capping of 16 mm glass or plastic test tubes; available in multiple sizes (11 mm–17 mm) and colors for sample color-coding from MBP.

Cap, Plug, 16mm, High Grip, White, BAG/1000

Cap, Plug, 16mm, White, 1000/Bag, CS/10000

Cap, Plug, 16mm, Blue, 1000/Bag, CS/10000

Cap, Plug, 16mm, Green, 1000/Bag, CS/10000

Cap, Plug, 16mm, Red, 1000/Bag, CS/10000

Cap, Plug, 16mm, Yellow, 1000/Bag, CS/10000

Cap, Plug, 12mm, Blue, CS/20000

Cap, Plug, 12mm, Clear, CS/20000

Cap, Plug, 12mm, Green, CS/20000

Cap, Plug, 12mm, Lavender, CS/20000

Cap, Plug, 12mm, Orange, CS/20000

Cap, Plug, 12mm, Red, CS/20000

Cap, Plug, 12mm, White, CS/20000

Cap, Plug, 12mm, Yellow, CS/20000

Cap, Plug, 11mm, Natural, BAG/1000

Plug Stoppers - For 12mm Tubes

Globe Scientific's polyethylene (PE) plug caps are designed in 11mm, 12mm, 16mm and 17mm sizes and are available in a selection of colors for sample identification. \n\nDescription: Cap, Snap, 10mm, PE, for Vacuum and Test Tubes, CS/10000\n\n

Blue

Clear

Green

Lavender

Yellow

Snap Caps with One Thumb Tab - For Test Tubes

113146A by Globe Scientific is a gray LDPE snap cap with a single thumb tab for 13 mm glass and evacuated blood collection tubes and 12 mm plastic test tubes. Snap-on closure seats with a positive click for secure sealing. 1,000 per case. Allows one-handed removal for rapid batch processing.

Cap, Snap, 13mm, PE, for 13mm Glass and Evacuated Tubes and 12mm Plastic Test Tubes, Gray, CS/20000

Cap, Snap, 13mm, PE, for 13mm Glass and Evacuated Tubes and 12mm Plastic Test Tubes, Blue, CS/20000

Cap, Snap, 13mm, PE, for 13mm Glass and Evacuated Tubes and 12mm Plastic Test Tubes, Clear, CS/20000

Cap, Snap, 13mm, PE, for 13mm Glass and Evacuated Tubes and 12mm Plastic Test Tubes, Green, CS/20000

Cap, Snap, 13mm, PE, for 13mm Glass and Evacuated Tubes and 12mm Plastic Test Tubes, Lavender, CS/20000

Cap, Snap, 13mm, PE, for 13mm Glass and Evacuated Tubes and 12mm Plastic Test Tubes, Red, CS/20000

Cap, Snap, 13mm, PE, for 13mm Glass and Evacuated Tubes and 12mm Plastic Test Tubes, White, CS/20000

Cap, Snap, 13mm, PE, for 13mm Glass and Evacuated Tubes and 12mm Plastic Test Tubes, Yellow, CS/20000

Cap, Snap, 16mm, PE, for 16mm Glass and Evacuated Tubes, Gray, CS/10000

Cap, Snap, 16mm, PE, for 16mm Glass and Evacuated Tubes, Blue, CS/10000

Cap, Snap, 16mm, PE, for 16mm Glass and Evacuated Tubes, Clear, CS/10000

Cap, Snap, 16mm, PE, for 16mm Glass and Evacuated Tubes, Green, CS/10000

Cap, Snap, 16mm, PE, for 16mm Glass and Evacuated Tubes, Lavender, CS/10000

Cap, Snap, 16mm, PE, for 16mm Glass and Evacuated Tubes, Red, CS/10000

Cap, Snap, 16mm, PE, for 16mm Glass and Evacuated Tubes, White, CS/10000

Cap, Snap, 16mm, PE, for 16mm Glass and Evacuated Tubes, Yellow, CS/10000

113140-Tubes, Caps & Racks Catalog

113140-Lab Supplies for Physicians Offices

Snap Caps with Two Thumb Tabs - For Test Tubes

113140A by Globe Scientific is a gray 13 mm LDPE snap cap with two thumb tabs, designed to recap blood drawing tubes, glass test tubes, and plastic culture tubes. Precision-molded LDPE maintains seal during centrifugation, agitation, and refrigerated storage. Supplied 1,000 per bag; also available in six additional colors (blue, clear, green, lavender, red, yellow) for color-coded sample identification.

Cap, Snap, 13mm, PE, for Vacuum and Test Tubes, Gray, CS/6000

Cap, Snap, 13mm, PE, for Vacuum and Test Tubes, Blue, CS/6000

Cap, Snap, 13mm, PE, for Vacuum and Test Tubes, Clear, CS/6000

Cap, Snap, 13mm, PE, for Vacuum and Test Tubes, Green, CS/6000

Cap, Snap, 13mm, PE, for Vacuum and Test Tubes, Lavender, CS/6000

Cap, Snap, 13mm, PE, for Vacuum and Test Tubes, Red, CS/6000

Cap, Snap, 13mm, PE, for Vacuum and Test Tubes, Yellow, CS/6000

Cap, Snap, 16mm, PE, for Vacuum and Test Tubes, Gray, CS/6000

Cap, Snap, 16mm, PE, for Vacuum and Test Tubes, Blue, CS/6000

Cap, Snap, 16mm, PE, for Vacuum and Test Tubes, Clear, CS/6000

Cap, Snap, 16mm, PE, for Vacuum and Test Tubes, Green, CS/6000

Cap, Snap, 16mm, PE, for Vacuum and Test Tubes, Lavender, CS/6000

Cap, Snap, 16mm, PE, for Vacuum and Test Tubes, Red, CS/6000

Cap, Snap, 16mm, PE, for Vacuum and Test Tubes, Yellow, CS/6000

6150-Group-Tubes, Caps & Racks Catalog

6150-Group-TDS-6148

Test Tube with Attached Blue Screw Cap

Globe Scientific 6150: 10 mL polystyrene test tube with attached blue screw cap, 16 × 100 mm, non-sterile, optically clear. 1000 per case. For routine specimen collection, sample storage, and colorimetric assay prep. Order at <a href="https://www.mbpinc.net/quickorder">mbpinc.net/quickorder</a>.

Test Tube with Separate Blue Screw Cap, 16 x 120mm (15mL), PS, 125/Bag, 8 Bags/Unit, CS/1000

Test Tube with Attached Blue Screw Cap, 16 x 100mm (10mL), PS, CS/1000

Test Tube with Attached Red Screw Cap, 16 x 100mm (10mL), PS, STERILE, Individually Wrapped, CS/750

Test Tube with Attached Red Screw Cap, 16 x 120mm (15mL), PS, STERILE, 150/Bag, 5 Bags/Unit, CS/750

Test Tube with Attached Red Screw Cap, 16 x 120mm (15mL), PS, STERILE, Individually Wrapped, CS/500

Test Tube with Attached Blue Screw Cap, 16 x 150mm (20mL), PS, CS/500

Test Tube with Attached Screw Cap, 16 x 100mm (12mL), PP, 250/Pack, 4 Packs/Unit, CS/1000

6148-Group-Tubes, Caps & Racks Catalog

6148-Group-TDS-6148

Test Tube with Attached Red Screw Cap

6148 by Globe Scientific is a 12 × 75 mm, 5 mL polypropylene test tube with an attached red screw cap providing a leak-tight seal. Rated to 3,000 RPM, autoclavable, and freezer-compatible, with chemical resistance to acids, alkalies, and solvents. Ships 1,000 per case (250/bag × 4 bags).

Test Tube with Attached Red Screw Cap, 12 x 75mm (5mL), PP, 250/Bag, 4 Bags/Unit, CS/1000

Test Tube with Attached White Screw Cap, 12 x 75mm (5mL), PP, 250/Bag, 4 Bags/Unit, CS/1000

Test Tube, 11 x 70mm (3mL), PS, BAG/1000

118011 by Globe Scientific is a 3 mL polystyrene test tube, 11×70 mm, supplied in a bag of 1000. Rated to 1500 RPM maximum centrifugation; optically clear polystyrene for visual sample inspection. Fits 11 mm tube racks and is compatible with 11 mm polyethylene plug caps in multiple colors. ISO 9001:2015 certified manufacturer.

Test Tube, 12 x 55mm (3mL), PP, BAG/1000

117041 by Globe Scientific is a 12 × 55 mm, 3 mL polypropylene test tube, non-sterile, in a bag of 1,000. Rated for centrifugation up to 3,000 RPM, autoclavable and freezable. Polypropylene construction resists acids, alkalis, and most solvents — suited for sample prep, dilutions, and immunological assays where PS tube limits are insufficient.

Test Tube, 12 x 55mm (3mL), PS, BAG/1000

Globe Scientific 117011 — 12×55 mm, 3 mL round-bottom rimless polystyrene test tube, rated to 1,500 RPM. Bag of 1,000. Suited for serial dilutions, hemagglutination assays, precipitation tests, and high-volume reagent dispensing.

113010-Tubes, Caps & Racks Catalog

Test Tube, 12 x 86mm (5mL), PS, with Rim, BAG/1000

113010 by Globe Scientific is a 5 mL polystyrene test tube measuring 12 &times; 86 mm with a beaded rim and round bottom, supplied in bags of 1,000. Optical-clarity PS construction allows direct visual inspection of turbidity and pelleting; the rimmed design seats securely in standard 12&ndash;13 mm tube racks and caps. Rated to 1,500 RPM centrifugation; suited for serial dilutions, cell culture, agglutination, and clinical sample staging.

110182-110186-Tubes, Caps & Racks Catalog

110182-110186-TDS-110182-110186

Test Tube, 17 x 100mm (15mL), PS, 500/Bag, 2 Bags/Unit

110182 by Globe Scientific is a 17 × 100 mm, 15 mL polystyrene test tube — optically clear PS, 1,500 RPM rated, 1,000 tubes total (500/bag × 2 bags). Standard format for serum separation, agglutination, and clinical chemistry workflows.