Procycle™ 1.2 mL 8-Strip Cluster Tubes are ideal for high-throughput screening processes and long-term storage. It all begins with high-clarity, ultra-pure polypropylene, combined with proprietary injection molding techniques to produce high-clarity vessels that are exceptionally robust, chemically-resistant, and pure. Ideal for automation / HTS. Tubes are made from virgin polypropylene. Tubes in a rack system are suitable as a reaction vessel in your robotic workstation or as a long-term storage vessel in your sample library. Certified free of detectable RNase DNase, DNA, PCR inhibitors, and tested pyrogen-free.