This polypropylene thin wall PCR tube with a flat cap is specifically designed for PCR and thermal transfer applications. The ultra-thin and consistent tube walls ensure that thermal transfer is precisely even along the surface of the tube. The unique flat cap design guarantees a perfect fit to prevent sample evaporation during thermal cycling. Made from highly polished molds and free of lubricants, dyes, heavy metals, and fillers. Certified RNase, DNase, and pyrogen free to ensure the purity of your reaction. Volume: 0.5mL. Material: 99.9 percent Virgin Polypropylene. Cap Shape: Flat. Color: Orange. Corning Axygen #: PCR-05-O.