DuoClick 2-position 5 mL Screw Cap Culture Tubes from MTC Bio. 1/4 turn clicks cap into position for aerobic growth conditions; 1/2 turn clicks cap into position for anaerobic growth conditions.
DuoClick™ culture tubes eliminate the hassle of snapping and unsnapping traditional culture tubes.
5 mL screw cap culture tubes measure 12 x 75 mm and have printed graduations at 0.1 mL increments (also available without graduations). Culture tubes have flat caps that are markable and a large white marking area on the side of the tube. They are made of polypropylene and have a max relative centrifugal force (RCF) of 4,000 x g.
Screw cap culture tubes are available as follows:
Sterile with attached caps, graduated, packed in bags (25 tubes/bag, 20 bags/case), 500 tubes/case (MTC Bio cat # T8730)
Sterile with attached caps, graduated, racked in foam racks (50 tubes/rack, 10 racks/case), 500 tubes/case (MTC Bio cat # T8732)
Sterile with attached caps, graduated, individually-wrapped, 500 tubes/case (MTC Bio cat # T8734)
Non-sterile with separated caps, non-graduated, bulk-packed, 1000 tubes/case (MTC Bio cat # T8750)
Please note that caps screw on clockwise and screw off counter-clockwise as any other normal tube. Video below incorrectly shows tubes screwing on counter-clockwise.