How Do Porous Plastic Pipette Tip Filters Prevent Aerosol Contamination?

Transparent laboratory pipette tips with assorted white cylindrical porous filter plugs in different diameters for liquid handling applications.

Aerosols formed during pipetting can travel up a tip and contaminate the pipette shaft, a serious risk in PCR and other sensitive workflows. This article explains how porous plastic filters inside pipette tips intercept those aerosols and why pore size alone does not guarantee protection. It also covers the tradeoffs that affect pipetting performance and the specifications buyers and OEM developers should confirm before sourcing filter media.

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Laboratory Filter Cartridges: Types, Applications, and Selection Guide

Transparent cylindrical Laboratory Filter Cartridges with narrow outlet tubes and matching white porous filter discs in four sizes.

Choosing a laboratory filter cartridge means more than picking a micron number. This guide compares sintered plastic, sintered metal, and membrane-based options. It explains where each fits in sample preparation, venting, gas handling, and pipetting, and shows how pore-size ratings, wetting behavior, chemical compatibility, cleaning, and validation affect the choice. It ends with a practical checklist for specifying a custom cartridge.

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