This series of tubes is also available either plain or with printed graduations and white marking area for sample identification. Washer seal screw caps are unattached but incorporate a flat top which provides a writing surface. These flat surfaced caps can be used with automatic capping machines in packaging industries. Closures are supplied in natural color. Perfect for cryogenic work. Non skirted tubes can be centrifuged up to 20,000g. Skirted tubes can be centrifuged up to 17,000g. Will withstand temperatures from -196 °C to +121 °C.

Product Features:

• 95kPa Tested
• Made of polypropylene
• Tubes and caps in the Micrewtube® Family are certified RNase, DNase, DNA and Pyrogen free