These caps are compatible with all Axygen Scientific screw top microcentrifuge tubes, including both skirted and nonskirted variations of the 0.5 ml, 1.5 ml, and 2 ml microcentrifuge tubes.

• Available looped and non-looped

The O-ring closure is formulated and manufactured from a special compound resistant to chemicals such as anhydrous ethyl alcohol, purified ether, hexane, acetone, chloroform, acetonitrile, 40% trifluoroacetic acid solution, and other chemicals used in most laboratories. The caps have extra long lips to help protect samples and ribs to allow one hand operation.