These P250 pre-sterile pipette tips are designed exclusively for Span-8 systems, and, like all our pipette tips, are made of 100% premium grade polypropylene. The Span-8 innovative design enables you to efficiently automate processes such as compound retrieval, consolidation and reformatting to and from a variety of labware types. All pipetting tips are manufactured to stringent specifications to ensure straight, contamination-free and leak-proof products. Guaranteed to be free of DNA, DNase/RNase, PCR inhibition, pyrogen/endotoxin and trace metals. Capacity (including air gaps) is 220 μL. Case of 10 racks.