Sterile tips made of polyethylene White and violet filter layers in the tip retain aerosols and biomolecules Purple filter layer blocks liquids, binds aerosols and does not allow any liquid to pass through Hydrophobic white layer repels drops, splashes and binds aerosols Free of PCR inhibiting additives Provide protection against contamination of pipet and sample Color coded tip boxes simplify matching pipetes with their tips PCR and microbiology procedures Order Info 10 Racks x 96 tips