ZAP™ Aerosol Filter Pipet Tip. Fits Most Popular 1000 µL Pipettors. Sterile. Patented robotically inserted endotoxin free filter. Protease, Human DNA, ATP, RNase/DNase and Endotoxin Free (non-pyrogenic). Polypropylene USP Class VI resin. Validated Sterilization (ISO 11137) for use in Research and Medical labs. Refillable autoclavable Purple color racks. 96 tips/rack. 6 racks/pack. 88.9 mm H. Made in USA.