Tube Closure Polypropylene Screw Cap Natural For Sample Tubes with External Threads NonSterile

The screw caps are manufactured from non-toxic polypropylene and offer strength and clarity

This along with a polypropylene inner lip ensures a leakproof seal, even at changing temperatures

The caps feature a long skirt and a super-fast thread design that allows them to be removed or sealed with a single turn

Autoclavable