Product features 【 Material 】 Medical grade polypropylene material, capable of repeated freeze-thaw cycles 【 Capacity 】 0.5ml, 1.5ml, 2.0ml external rotation, 2.0ml internal rotation. The lid comes in seven colors: red and yellow Blue, green, white, purple, orange [packaging] 0.5ml, 1.5ml suitable for 100 cell freezer box, 2.0ml suitable for 81 cell freezer box [sterilization method] Electron beam sterilization, no DNase, RNase, endotoxin, or exogenous DNA [applicable temperature] Tolerance -196 ° C~146 ° C, safe storage under liquid nitrogen gas phase conditions [applicable scope] Commonly used consumables in national biological sample libraries, third-party biological sample libraries, university laboratories, hospital sample libraries, scientific research and testing center biological sample libraries, and cell culture experiments