The ultrahydrophobic, extremely homogenous surface of the Eppendorf epT.I.P.S.® LoRetention pipette is achieved through an innovative treatment at the molecular level ‚Äì the Pearl Effect Technology. The tips are uncoated and free from additives, thus nothing can bleed into the sample. Liquids roll off completely, so that almost no sample remains in the tip. In comparison, the adhesive layer of liquid in standard tips retains considerably more sample material. Autoclavable, high chemical resistance, with a 5 year shelf life.