Product features The tube body is made of medical grade USP Class VI100% pure polymer polypropylene (PP) material; Tolerance temperature -40 ℃ to 121 ℃; Thickened tube wall, no sealing ring, avoiding cross contamination, conical design at the bottom of the tube, resistant to centrifugation and vibration. Specifications include: 5ml, 7ml, 10ml, 30ml irradiation sterilization, no DNA enzyme, no RNA enzyme, no pyrogen, no endotoxin: · 100% complete sealing test, meeting the production and packaging requirements of a 100000 level dust-free workshop under low temperature, high temperature, aviation, and negative pressure conditions, certified by the IS013485 system