The filter tip is designed to avoid cross-contamination during the experiment operation. It is used with single-channel and multi-channel pipettes, and covers a variety of specifications to meet the different needs of the experiment. The boxed design is particularly suitable for aseptic operation experiments such as cell culture and microbial culture, and experiments that are prone to cross-contamination such as PCR. It is convenient and fast without sterilization. The standard size design can well match the pipettes of mainstream brands, such as Eppendorf, Gilson, Thermo Finnpipette, Brand, Sartorius, Dragonlab, etc.