Culture Tube with Screw Cap, Sterile, Polystyrene, 12 x 75 mm, 5 mL; 25/Bag, 500/Cs

Dual position caps allow airflow for for aerobic culturing and airtight seal for anaerobic culturing|Flat, markable screw cap is easy to open and close|Two-click screw cap for aerobic and anaerobic culturing|Culture tube is constructed of crystal clear polystyrene (PS)|Sterile culture tubes include printed graduations|Tubes come packaged 20 bags of 25 tubes per case with caps pre-attached to tubes|The MTC? Bio DuoClick? culture tubes feature a unique screw closure system. DuoClick tubes eliminate the excess force, splashing, and general frustration of traditional snap-cap culture tubes. The advanced cap design includes two distinct positions for aerobic and anaerobic culturing. Just rotate the cap to the first click to secure the cap in the aerobic position or rotate it past the second click for a leakproof, airtight seal for anaerobic culturing. The tubes are available in two plastic polymers, polystyrene (PS) and polypropylene (PP), and two capacities, 5- and 14-mL. Tubes are available sterile and non-sterile and in a variety of packaging configurations. Sterile tubes feature an attached cap and printed graduations, non-sterile tubes come bulk packed without caps attached and without graduations.