... with safe lock, Made of medical grade polypropylene,WHB 0.5ml effendorf tube is with safe lock,Non sterile,Conical bottom ... ,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-CT13500*141.5ml effendorf tube, graduatedWHB-CT141000*112ml ...