Overfitting caps for use with sterile culture tubes have two positions: loose for aerobic culturing and tight for a-aerobic cultureing and leakproof sealing.

Multiple Uses Ideal for general purpose laboratory work. The 30 ml tubes are also being incorporated as one of the leakproof primary containers in shipping infectious specimens. 30 ml tube with spork is widely used in parasitology specimen transport Leakproof screwcaps Vacuum-chamber…

CryoSure® brand vials are recommended for storing cell cultures, blood/serum specimens, sperm, and other biological specimens at vapor phase* liquid nitrogen temperatures (-320°F/-195°C). By using external threads, all CryoSure® vials are designed to be less susceptible to aerosol contamination…

Polyethylene stopper caps to fit a variety of general purpose test tubes.

All of our polyethelyene screw caps feature a molded-in sealing ring for a rim-seal that provides a leakproof closure without the use of a silicone gasket. Evergreen pioneered rim-seal caps in 1975. We have found that a properly designed rim-sealing cap is extremely effective in sealing small vials…

Multiple Uses Ideal for general purpose laboratory work. The 30 ml tubes are also being incorporated as one of the leakproof primary containers in shipping infectious specimens. 30 ml tube with spork is widely used in parasitology specimen transport Leakproof screwcaps …