Features: 1. The appearance of pure white, opaque 2. High Temperature: Temperature -200 ~ +250 ℃ 3. Centrifuge tube can withstand 10,000 rev / min 4. PTFE tube can be customized according to customer requirements 5. Have extraordinary chemical tolerance, almost all of the chemical solvent resistance (resistance to acid, alkali, aqua regia, and various organic solvents)