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Tubes

Lab tubes from 0.1 ml to 50 ml: PCR tubes and strips, 0.5-5 ml microcentrifuge tubes, 10, 15 and 50 ml centrifuge tubes, 16 mm screw-thread tubes with 15-415 or GL14 necks, and 20 ml sample cells with cap and septum.

How to choose

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46
Quick orderPaste SKUs and quantities from your spreadsheet or PO

One line per product: SKU, then the number of packs. Up to 60 lines.

46 of 46 products

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Compare tubes

Rows that differ are in bold.

Choose by volume and application first, then by cap, centrifuge rating and material.

Step 1: Volume and application

TubeVolumesTypical use
PCR tubes and strips0.1, 0.2 and 0.5 mlPCR and qPCR in a thermal cycler
Microcentrifuge tubes0.5, 1.5, 2.0 and 5.0 mlSmall-volume spins, storage, sample prep
Conical centrifuge tubes10, 15 and 50 mlCell pellets, extractions, general lab work
Plastic test tubes5 to 15 ml (12 × 75 to 16 × 150 mm)General testing and sample handling
Cryovials0.5 to 10 mlFrozen storage at -80 °C or in liquid nitrogen vapour

Step 2: Cap type

  • Snap and flat caps: quick one-hand opening; flat caps are easy to label.
  • Safe-lock caps: lock shut, so they do not pop open in the centrifuge or on a heating block.
  • Screw caps: the tightest seal for transport and storage.
  • PCR caps: flat caps for optical reading in qPCR; convex (domed) caps for standard PCR.

Step 3: Centrifuge rating

Every tube has a maximum RCF (× g). Tubes in this range are rated 8,000 to 15,000 × g. Your centrifuge shows rpm or × g; to convert, RCF = 1.118 × 10⁻⁵ × rotor radius in cm × rpm².

Step 4: Material

Polypropylene (PP) resists most chemicals and can be autoclaved at 121 °C. Polystyrene (PS) is clear and rigid but is not autoclavable and does not resist organic solvents; the plastic test tubes in this range are PS. Check the material on each product page.

Cryogenic storage

Store cryovials in the vapour phase of liquid nitrogen rather than in the liquid, which can seep into a vial and expand on thawing. External-thread caps keep the threads away from the sample; internal-thread vials take less space in a box. Choose a cryovial box with the right well size for 1.8/2 ml, 5 ml, 10/15 ml or 50 ml tubes.

Questions buyers ask

Which caps fit the 16 mm screw-thread tubes?

The tubes with a 15-415 neck take 15-415 screw caps, and the 9 ml GL14 tube takes a GL14 cap. Both are in the screw caps category.

What are the 20 ml sample cells for?

They are 25 × 60 mm clear tubes with a 22-400 cap and rubber/PTFE septum, some with a printed 10 ml or 15 ml fill line, for instruments that sample through a septum.

Are the foam racks sold with tubes?

The foam racks for 16 × 100 mm tubes (25 or 150 places) are sold empty.

Round or flat bottom screw tubes?

Flat-bottom tubes stand on their own; round-bottom tubes are easier to mix and clean and fit standard tube racks.