Made of medical-grade PP, graduated, non-sterile, with safe lock, Made of medical grade polypropylene,WHB 0.5ml effendorf tube is with safe lock,Non sterile,Conical bottom,1500 pcs/bag, 10 bags/carton,OEM offered. ProductStock No.Package0.5ml effendorf tube with safe lock, graduatedWHB-CT151500*101.5ml effendorf tube with safe lock,WHB-CT12500*141.5ml effendorf tube with safe lock, graduatedWHB- ...