VWR* Low Retention Aerosol Filter Pipet Tips^ Extra Long. 300uL. Rnase/Dnase, Endotoxin, DNA free. Fits Most 300ul pipettors. In refillable racks. Tips are autoclavable. 96 tips per rack, 6 racks per pack. 8 packs per case. 4608 tips per case. Sterile