Uni-Flex® Safety Caps For Sealing 12mL Glass Blood Collection And 13mL Culture Tubes, Lavender, 1000/PK

Uni-Flex® Safety Caps for sealing glass blood collection and culture tubes will fit all glass tubes of the specified volume regardless of manufacturer. 

They will NOT aerosol when opened and offer a liquid-tight seal that prevents evaporation and can withstand centrifugation, agitation, refrigeration and freezing. 

Uni-Flex® Safety Caps are available in seven colors that conveniently correspond to blood collection cap colors.

Easy, one hand removal and application. To close, press down firmly with thumb to lock in place. To open, simply pry cap up with thumb.

Caps have a unique three internal ring system for the most secure closure

Write directly on the cap with indelible ink for easy labeling. 

The clear cap is trace-metal free

Sold in bags of 1000