●Universal fit for most all research grade pipettors including Gilson PIPETMAN ●Low binding surface technology virtually eliminates sample hold-up and increases precision and accuracy ●Color coded tray insert cards for quick and easy identification on the bench: 10μl (Red), 20μl (Yellow), 200μl (Yellow) and 1000μl (Blue) ●Certified RNase, DNase, Nucleic Acid and Pyrogen-FREE ●Pre-sterilized by gamma irradiation