Syringe filter for the filtration of solutions

A syringe filter is used for particulate and sterile filtration of small volumes of solution. Various pore sizes and filter membrane material are available depending on the application. Syringe filters are bidirectional, filtering whether you intend to puncture a vial and withdraw a solution or, attach one to the end of a single-use syringe to pass a solution through. If the need is for sterile venting of bottles of vials, a hydrophobic membrane should be used.

Customer requirements:

To produce devices for the wide variety of filter options while maximizes effective filtration area and minimizing residual volume. There are to be used to withdraw solution from bags, vials, and other systems. Coring effects from puncturing a rubber septum were minimized with proper bevel design.

Our solutions:

The filter housing is made of two injection molded parts with the upper portion having the spike or cannula and the lower portion having the luer lock connection. Special care is given to the spike geometry or cannula bevel to minimize punching out rubber particles while piercing the septum. The desired filter medium is ultrasonically welding to the housing, leak and integrity tests are done to ensure tightness. Syringe filters are available in various hydrophilic and hydrophobic membranes with different retention rates depending on application.