Snap-pop lid centrifuge tubes are ideal for sample storage, Collection and experimental procedures. Single piece lid and tube manufactured from high clarity virgin polypropylene and are autoclavable. Max RCF is 1, 000G.Temperature range of -80°C to 120°c. Sterilized by irradiation (SAL 10-6), RNase/DNase free and non-pyrogenic. Every case is printed with the lot number for quality traceability.