These P250 sterile pipette tips with barriers are designed exclusively to work with Span-8 systems, and, like all our pipette tips, are made of 100% premium grade virgin polypropylene. FIltered tips reduce the possibility of sample cross-contamination from aerosols. The Span-8 innovative design helps you 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, leak-proof products guaranteed to be free of DNA, DNase/RNase, PCR inhibition, pyrogen/endotoxin and trace metals. Capacity for the filter tips (including air gaps) is 125 μL. Case of 10 racks.