15ml 50ml PP Flat Top Plug Seal Sterile Conical Centrifuge Tubes for Laboratory

15ml 50ml PP Flat Top Plug Seal Sterile Conical Centrifuge Tubes for Laboratory. Medical Grade Materials: Tubes made of strong, transparent polypropylene; caps made of medical grade polyethylene. High RCF Resistance: 15ml tubes withstand 8,400 RCF; 50ml tubes withstand 9,400 RCF. Sterile & RNase/DNase Free: Gamma radiation sterilized, non-pyrogenic, and free from nucleases. Certified Quality: Compliant with CE, ISO, FDA, and ISO 9001:2008 standards. IATA Safety Compliant: Sealing test complies with International Air Transport Association safety standards. Easy Marking Area: Large white writing area on tubes for clear sample identification. Double Threaded Design: Reduces cross-threading and ensures caps open and close easily.