2 mL capacity with round bottom Self-standing design Black graduations and larger marking spots for easier filling and sample identification Manufactured from polypropylene to withstand temperatures to -196°C Silicone washer for a secure seal Vials may be color coded with inserts (see Cat. No. 430499) Special base design allows vials to be locked into cryogenic rack and tray (Cat. No. 431131) for single-handed manipulation Sterilized by gamma radiation Nonpyrogenic and DNase/RNase-free WARNING: Do not use cryogenic vials or Cryogenic Vial Storage boxes in the liquid phase of liquid nitrogen. Only store in the vapor phase above the liquified gas. Always use appropriate safety equipment when removing vials from cryogenic storage.