freezing vials

*Manufactured from durable PP and PE

*Aavailable with 4 volumes: 0.5ml, 1.5ml, 2.0ml and 5.0ml

*Interlocking cap design ensure exact fit and will not absorb water or other contamination

*Part of the tube has mold engraved scale experimental process of recording easy

*Closures containing silicone gasket can avoid liquid leakage

*Screw cap for one-handed operation

*Temperature range: -196 ℃ -121 ℃