1.Sterile,Autoclavable,Gamma radiation ,Non- pyrogenic,PP 2.cone-bottom,flat-top caps 3.Packing:foam pack ... 4.certificate:ISO Detailed Product Description50ml PP centrifuge tubes, Sterile,AutoclavableMedical grade poiypropyleneGamma radiation sterilizedNon-pyrogenicRCF:50ml ... ,polyethylene,available in 17mm diameter tube1000pieces/case 50ml gamma radiation pp centrifuge tube