Product features 【 Encoding Information 】 The bottom QR code, tube barcode, and digital clear code are combined into one, and the coding information for each frozen storage tube is unique 【 Material 】 Medical grade polypropylene material, capable of repeated freeze-thaw cycles 【 Capacity 】 0.5ml, 1.5m, 2.0ml external rotation, 2.0ml internal rotation. The lid comes in seven colors: red, yellow, blue, green, white, purple, and orange 【 Packaging 】 0.5ml, 1.5ml suitable for 100 cell cryopreservation box, 2.0ml suitable for 81 cell cryopreservation box 【 Sterilization method 】 Electron beam sterilization, no DNase, RNase, no endotoxins, no exogenous DNA 【 Applicable temperature 】 Tolerance -196 ° C~121 ° C, safe storage under liquid nitrogen gas phase conditions 【 Scope of Application 】 Commonly used consumables for 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