Designed to prevent cross contamination on critical applications such as in the field of Molecular Biology, or Clinical and Life Science. Capp barrier pipette tips are RNase, DNase and Pyrogen free certified and crystal clear. The filters of ExpellPlus barrier tips are made of pure HDPE (High Density Polyethylene) and are free from any cellulose additives. They are 3-4 times smaller than by many other brands of filtered pipette tips, making ExpellPlus barrier tips the perfect choice within the field of molecular biology. Capp pipette filter tips are universally compatible with the majority of pipette brands. The volumes up to 300µL of ExpellPlus barrier tips are low retention, resulting in extremely low binding properties. Learn more about ExpellPlus low retention tips. The accurate graduation marks on Capp filtered pipette tips support easy visual volume identification. View our Low Retention Pipette Tips.