Our Septum Centrifuge Tubes are designed for secure contamination-free sample handling Each tube features a highly resilient silicone septum in the center of the cap allowing for repeated syringe access without the need to open the cap The PTFE-coated silicone septum ensures excellent chemical resistance to a wide range of solvents while maintaining full recovery after multiple punctures These tubes are ideal for applications requiring minimal sample exposure and sterile conditions The racked packaging enhances convenience and organization in laboratory workflows Pierceable silicone septum with PTFE coating for superior solvent resistance Minimizes contamination risk by eliminating the need to open the cap Resilient septum fully recovers after repeated punctures Racked for easy access and organization Pack of 25 for streamlined lab efficiency These innovative conical tubes are perfect for sensitive sample handling analytical applications and contamination-free transfers in researc