DuoClick tubes feature a unique, patent pending screw cap closure system that completely eliminates excess force, splashing and general frustration of traditional snap-cap culture tubes. Advanced cap design includes two distinct positions for aerobic and anaerobic culturing. Easy to use - rotate the cap 1/4 turn to the first click to secure the cap in the aerobic position or rotate cap another 1/2 turn past the second click for a leak-proof, airtight anaerobic seal. Gamma sterilized, polypropylene tubes feature flat, markable screw caps, withstand speeds up to 4,000xg, and are supplied with attached caps.
Aerobic culturing at first click
Anaerobic after second click
Research or further manufacturing use only, not for food or drug use.