4.5 mL Externally threaded CryoFreeze vial, Stargrip base, Sterile

Sterility: Sterile (Up to 5 years)
Cap Color: Clear
Cap Thread: Externally-Threaded
Cap Seal: Lip-Seal
Caps are assembled onto tubes.

• Ultra-pure polypropylene meets FDA 21 CFR 177.1520 & USP Class V
• High-contrast black 100 µL graduations are bold and easy to read.
• Large white writing area on all tubes.
• Optimized for vapor-phase liquid nitrogen storage.
• Note: not suitable for immersion in liquid nitrogen.
• Temperature range: -196°C to 121°C.
• HDPE cap has secure lip-seal feature so no O-ring is necessary.
• Maximize tube storage within racks, boxes, and canes.
• Sterile and certified free of detectable DNase, RNase, DNA, PCR inhibitors, and endotoxins