Ambion® Tips are RNase- and DNase-free and are provided in ten racks containing 8 x 12 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.