🍀Sterilization🍀EO sterilized, no pyrogen, no DNase/RNase, no human DNA. 🍀Virgin PP Material🍀0.5ml centrifuge tube is made of high purity PP material, smooth and flat, no residual solution, no leakage. 🍀Precise Scale🍀0.5ml centrifuge tube scale is clear for accurate sampling, 0.1ml increments, suitable for scientific research in the laboratory. 🍀Sterilizable and Freezable🍀Autoclavable at 249℉ and freezable to -176℉. 🍀Package and USE🍀1000 pieces of sterile 0.5ml microcentrifuge tubes. Ideal for liquids, solids, DNA extraction experiments, small sample storage, bead or seed storage.