MBP Pipette Tips in Refill Racks by Molecular Biology Products are polypropylene tips in stacked inserts that reload empty tip racks, which saves plastic and storage space in busy labs. Choose 10 µL tips for Gilson P2 and P10 style pipettors, 200 µL graduated universal fit tips or 1200 µL universal fit tips, all clear and certified RNase- and DNase-free.