... with screw cap ,molded graduations,10ml,PP 2.2200PCS/CTN 3.withISO9001,CE,FDAcertificate 4,T/T 5.OEM centrifuge tubeCentrifuge tubes ... produced by "Changlong" are using high quality polypropylene,it won't rupture when high speed centrifugation10ml centrifuge tube with ... bottom,self-standing,with screw cap and printed graduations50MLPP700pcs/cartonCLA002Conical bottom,s,with screw cap and printed ...