- Made of polypropylene
- Lip seal caps made of polyethylene
- RNase, DNase, Pyrogen and DNA-free
- Temperature range: -196°C to +121°C
- Available plain or with graduations
- Available sterile or non-sterile
Tubes and caps in the Micrewtube® Family are certified RNase, DNase, DNA and Pyrogen free. Closures are supplied in natural color. Will withstand temperatures from -196 °C to +121 °C. Non skirted tubes can be centrifuged up to 20,000g. Skirted tubes can be centrifuged up to 17,000g. Perfect for cryogenic work.
Available with washer seal or lip seal.
Washer seal secured in the top of the cap ensures a positive leakproof seal, time after time, keeping the integrity of small samples under even the most adverse conditions.
Lip seal inside the cap ensures a positive leakproof seal under even the most adverse conditions. This deep internal lip fits snugly against the interior wall of the tube preventing the contents from coming in contact with the threads, thus reducing the chances of sample contamination. Lip seal caps cannot be autoclaved since closure is made of high density polyethylene.
Flat tops provide a writing surface and can be used with automatic capping machines in packaging industries.
Attachment loop prevent contamination and mix-up.
Tubes without loop are for users who prefer to remove the caps completely from the tubes when filling or sampling.