Feature:1. PREMIUM MATERIAL: Microcentrifuge tube is made of high purity polypropylene, slick and flat, no vestigital solution, no leakage.2. WIDE TEMPERATURE RANGE: Microcentrifuge tubes are suitable for a wide temperature range from 80 to 121 without deformation. Tubes can be cleaned under high pressure after opening (121C for 20 minutes)3. SAFETY LOCK: Each 1.5 ml microcentrifuge tube is equipped with a safety lock for a secure seal without leakage. They can be placed on a shelf and reused.4. STABILITY PERFORMANCE: 1.5ml microcentrifuge tubes can be used as high pressure cleaner test tubes with excellent mechanical stability during centrifugation.5. 500PCS: The package includes 500 pcs microcentrifuge tubes in total, enough quantity to meet your actual needs.Specification:Item Type: Microcentrifuge TubeMaterial: PolypropyleneUses: Ideal for Liquid, Solid, DNA Extraction Experiments, Small Sample Storage, Bead or Seed Storage, Widely Used in Molecular Biology, Clinical Chemistry and Biochemistry Research.Package List:500 xMicrocentrifuge Tube