These vials are manufactured from polypropylene to withstand temperatures down to –196 °C.

• Black graduations with large marking spot
• Vials have a silicone washer for a secure seal
• 2 ml self-standing vials are available in five cap colors.
• Vials may be color coded with inserts
• Free foam rack with each case
• RNase-/DNase-free
• Sterile
• Nonpyrogenic

Self-standing vials have a special base design allowing them to be locked into cryogenic rack and tray (Cat. No. 431131) for single-handed manipulation.