Screw Caps for Microcentrifuge Tubes, Axygen Scientific
Caps are compatible with all Axygen Scientific screw top microcentrifuge tubes, including both skirted and nonskirted variations of the 0.5mL, 1.5mL, and 2mL microcentrifuge tubes (see 10011-486, 10011-508, and 10011-652 series). Polypropylene screw caps are supplied in four basic types: caps without O-rings, looped caps without O-rings, caps with O-rings, and looped caps with O-rings.
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.