Brand New, Unused, Never Opened, Undamaged Item in its Original Package. ·Medical-grade Polypropylene (PP) material ·Individual Rack Wrapped and Sterile ·Compatible with Most Brands of Single-Channel and Multi-Channel Pipettes ·Free of Pyrogens and Endotoxins, Free of DNase/RNase ·Smooth Inner Wall, Minimize Liquid Residue, and Ensure Accurate Liquid Aspiration ·Temperature Resistance Range from -80C to 120C, No Deformation Under High Temperature and High Pressure Treatment ·Clear Scale Markers, Good Transparency to Ensure Visual Confirmation of Pipette Aspiration Volume