The Novitain Manual Capper CV750, built to meet the specific individual requirements of our customers, can seal 50 sample collection tubes at once. The capper operates as a stand-alone device and is very easy to use. Simply place the Novitain Capcluster-50 on the racked sample collection tubes, place the Novitain rack into the rack entrance and with a simple forward / reverse action of the black handle all 50 tubes are now evenly capped. After capping 50 sample tubes in less than 2 seconds, the Novitain Capcluster-50 retaining foil can be easily removed to leave each tube individual securely capped for short-term storage.