Globe Scientific Dual Position Test Tube Caps 12 mm
These dual position caps are made from low-density polyethylene (LDPE) and are ribbed for easy handling. The cap is specially designed to provide aerobic or anaerobic storage of culture samples. When snapped into the tube, the cap provides a leak-resistant seal.
Note: Leave the cap in the loose position for aerobic work and in the sealed position for anaerobic cultures.
