Transparent PS or PP, 2-position ventilation stopper, round bottom, sterile.

• PS tubes without graduations, good thermal, mechanical and chemical resistance, centrifugation RFC 5000×g (fix-angle rotor) or 4800×g (swinging-bucket rotor)
• PP tubes with graduations; high thermal, mechanical and chemical resistance, centrifugation RCF 34000×g (fix-angle rotor) or 5800×g (swinging-bucket rotor)
• The ventilation stopper has two functions: when pushed in gently, it provides uniform ventilation of the tube contents; when pushed in firmly, it provides a tight seal
• Free from DNase/RNase and human DNA, non-pyrogenic