Bioland PCR Single Tube 0.5ml Flat Cover Transparent Optical Reaction Tube. High Thermal Conductivity: Thin-wall design ensures effective thermal conductivity for efficient PCR reactions. Leak-Proof Sealing: Tight sealing between tube and cap prevents evaporation and sample leakage. RNase/DNase Free: Product is free from RNase, DNase, human DNA, pyrogens, and cytotoxic substances. Dual Cap Options: Available in flat type for labeling and dome type to prevent solution binding. OEM/ODM Support: Full customization, minor customization, and flexible customization options available. ISO Certified: Manufactured under ISO9001:2015 management system certification. Virgin Polypropylene: Made from 100% virgin polypropylene material for high purity. Consistent Sealing: High side holes ensure consistent sealing and convenient positioning.