- 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.
- 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.
- Free foam rack with each case
- RNase-/DNase-free
- Sterile
- Nonpyrogenic