MicrewtubeŽWith O-Ring Seal and Flat Screw Cap
Caps are screwed on and Non graduated
With O-Ring Seal and Flat Screw Cap
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.
Tubes and caps in the MicrewtubeŽ Family are certified RNase, DNase, DNA and Pyrogen free.