Ambion Tips are RNase- and DNase-free and are provided in ten racks containing 96 tips each. They are compatible with Eppendorf, Finnpipette, Oxford Benchmate, Pipetman, Proline, Rainin, Socorex, and other brands of pipettors. Each lot of tips is subjected to rigorous testing for RNase contamination and is certified to be nuclease-free.