Manufactured in high-quality PP. Material free from DNase, RNase, and pyrogens, as well as non-cytotoxic. Centrifugation resistance: 7000 xg. Leak-free closure. Molded graduations for precision. Sterilized by irradiation with a SAL of 10-6 (ISO11137) and manufactured in a cleanroom of class 100,000, complying with ISO13485 and ISO9001 quality standards. Certificate of sterilization included (to be downloaded free of charge here)