Laboratory Test Tube Disposable Sterile Centrifuge Tube Microcentrifuge tubes are made from high quality PP materials with extensive chemical compatibility; Autoclavable and sterilized Withstand a max centrifugal force to 12,000xg, DNAse/RNAse free, non pyrogens. Product Features: 1. Micro centrifuge tubes are used for all sorts of applications, mainly used for sample storage, transportation, samples separating, centrifugation etc. 2. Easy identification of fill level. 3. Frosted writing sections in tube surface and tube cover for easy sample identification. 4. Flat cap surface for easy labeling of sample numbers. 5. Autoclavable, although most are sterile or free from RNase and DNase. 6.Made of high grade transparent PP material, widely used in molecular biology, clinical chemistry, biochemistry research. 7.Adapted to wide range temperatures from -80°C to 120°C.