Polypropylene 2ml Cryogenic Vials, Color : White

SECURE SEAL : The cap and tube are made from the same material so with  temperature change, they shrink and expand in unison .
FAST OPENING / CLOSING :
This is important when large quantities of vials are being are being used beacuse it saves times and means there is less chance of the  cap not being closed securely .
SIMPLE ONE -HANDED OPERATION :
All free - standing vails , when used with a workstation , enable you to unscrew vials with one handed.