Conical bottom. Suitable for cryogenic storage at -80ºC. Certified DNAse, RNAse and Pyrogen free. Withstands high RCF of 16000xg. Leak proof, HDPE cap. Labelling area: highly visible and solvent resistant. Amber colour and opaque, 0% light transmission between 270 – 600 nm. Sterilized by radiation. Resealable bag. Sterilization certificate included (to be downloaded free of charge at here)