The Novitain Capcluster-96 is a sheet of 96 push caps that can be used to seal an entire rack of 96 tubes at once. After the capcluster is used to seal a rack of push cap tubes, the foil backing can be removed to leave each tube individually capped. The capcluster is multi-pierceable without losing seal integrity. TPE caps in Natural are made out of Medical approved material (USP Class VI certificate). Economical solution for sample storage at temperatures down to -80°C. read more