Filter is made by UHMW-PE,processed by the unique craft, which has the hydrophobicity.

Hydrophobic filter form as of a solid barrier of aerosol and liquid,eliminating potential samples that may influence the results cross contaminate with pipette.
 filter integrate our hundreds of millions of filter production experience, produced by precision mold processing, which has a moderate elastic and without burr, and fit with tip inner diameter.Even the smallest filter (1.45 mm diameter, 1.6 mm thickness ), the size is also precise.