• Puncture/rupture-resistance polypropylene vial
• Silicone lid seal & patented easy-grip faceted lid with ergonomic 1.5 twist to open and close
• Flush cap saves space during storage • Printed writing area and graduations
• Sterile packed in resealable bags. Includes traceable sterility certificate
• Recommended for mechanical freezers and vapor phase LN2 (-196°)
• US Patent No. D595424 • Disposable