Thermo Fisher 3422-11PK Pack of 500 0.5mL Knurl, Skirted, Nat
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When you want to safely store samples at low temperatures for short periods of time, choose Thermo Scientific™ screw-cap microtubes in conical and freestanding designs. Their robust design and selected materials are ideally suited for use in biologics and come with a wealth of functional features, including ultra-clear external convoluted tubes and UV-protected amber tubes. Options include: with or without free-standing skirted bottom, with or without bolt-on straps, non-knurled/knurled tube for easy one-hand operation, multi-color caps and volume options in 0.5mL, 1.5mL and 2.0mL.

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Non-sterile Models do not contain RNase/Dnase, human and mouse DNA, pyrogens and endotoxins, ATP, and PCR inhibitors.
Electron beam irradiation sterilizationModels are free of RNase/Dnase, human and mouse DNA, pyrogens, endotoxins, ATP and PCR inhibitors.
Packaging is tailor-made to meet a wide range of requirements. Tubes are packaged in single bags with or without lids, with or without lids pre-installed, and double bags are also available on request for clean room environments.
100% virgin polypropyleneResin selected for high clarity and biological applications.
O-ringsDesign, thickness and material selection are optimized to provide protective properties to maximize sealing capacity, biological interaction and thermal retention. The black O-ring is made of EPDM.
Compatible with automated systems. Whether filling, capping or labeling automation, the products are designed to withstand the high torque stresses associated with automation. Product design helps address common automation issues such as: cracks, bowl feeder plugging, over/under torqued caps, and cross-threading.
CapacityRanges are 0.5, 1.5 and 2.0mL.
Tube Color Options include: natural for ultra-transparency or amber for ultraviolet (UV) protection (1.22% transmission between 220 and 500nm).
Available in a variety of colors with either standard or bolt-on covers. For more information, visit the lid product page.
Knurled tubeThe tube can be locked onto a special bracket for one-handed operation.
Non-knurled tubeIdeal for automation and labeling, the tube is smooth and has any labeling interference removed.
Skirted or Self-standing pipes can be erected by themselves without the need for pipe racks.
Tapered TubesRequire brackets to keep them upright.
Low nucleic acid and protein binding as well as low enzyme inhibition are characteristics of the selected resin.
RCF Range is 18,000 to 25,000 xg.
Temperature range is -80°C to +95°C. Short term storage at -80°C, -20°C, dry ice and wet ice. Short-term storage in gas phase LN2. Suitable for rapid immersion and quick freezing in LN2.
Water bath Temperatures up to +95°C.

† Subject to Thermo Fisher Scientific's standard limited warranty conditions. For more information, please log on to thermoscientific.cn or ask your sales representative.
Screw cap microtubes and caps are not recommended for autoclaving. Sterile options available.
Do not immerse or store in liquid phase LN2.