1. 1000 TIPS: 10 racks of 100 tips each are included in this box. 2.STERILE, DNASE AND RNASE FREE, which are sterilized Ethylene oxide fumigation then plastic sealed. 3.UNIVERSAL SIZE: Will fit the majority of micropipettes on the market, including mainly Scientific micropipettes size 100-1000μl, 200-1000μl on the market. 4.FILTER: High quality filter element to prevent liquid backflow and damage pipette . 5.ULTRA-CLEAR POLYPROPYLENE.