1000ul Pipette Tips Disposable Universal Filtering Pipette Tips 500Pcs Polypropylene (PP) Autoclavable for Laboratory The tip is made of medical grade polypropylene, and the filter element is made of ultra-high molecular weight polyethylene, which has good hydrophobicity; The filter element effectively forms a protective structure between the pipette and the sample to ensure the safety of sample aspiration; Reduce the hazard of the gas residue in the gun body to the operator during the pipetting process, and improve the repeatability of the experiment; Provide low-adsorption and ordinary filter tip, no coating design, will not pollute the sample, the surface of the low-adsorption tip is completely hydrophobic; Can be sterilized by high temperature and high pressure; Lengthened design of filter tip; No RNase, no DNase, no heat source; Provide aseptic rack mounting.