✔Plastic Centrifuge Tube Vial With Screw Cap under Laboratory category. ✔Plastic centrifuge tube Made from high quality PP material with transparent color 15ml capacity can be selected, clear scale marked, easy to use ✔Anti-pressure and anti-temperature with smooth wall and excellent sealing property ✔Perfect for lab analysis experiment needs use of centrifuges ✔Package included: 30X Graduated Plastic Centrifuge Tube