PS, clear, conical, with flat cap with integral sealing.
Electron beam irradiated
Longer length screw caps with sealing ring prevent any leakage
Engraved graduations at the conical bottom of each tube
Graduations and writing area are chloroform-resistant
During the freezing process, it is better to use plastic rack
During high-speed centrifugation, it is better to use suitable rotor adapters