●Made of high quality polypropylene material. ●Low residue and low adsorption when adsorbing liquid. ●Effectively form a protective structure between the pipette and the sample to ensure the safety of aspiration and sorting. ●No DNAase/RNAase, no heat source. ●The tail of the nozzle has a soft elastic vertebral body, which is compatible with most brands of pipettes. ●Innovative ultra-long design to reduce contamination caused by pipettes. ●Gamma-ray sterilization. ●Precautions: The product should not be exposed to the air for a long time, and it is forbidden to use it after the packaging is damaged. ●Preservation method: room temperature storage avoid high temperature and high humidity storage, transportation or storage process do not repress.