BioGenex pipette tips are made of high-quality polypropylene and are RNase and heavy metal-free when untampered. Inner surface is extremely smooth and requires minimum wetting. 1 mL pipette tips are optimized for use on BioGenex Xmatrx® and i6000™ Staining Systems, while 200 µL tips are optimized for Xmatrx® and NANO VIP staining systems.