• Porex Pipette Filter Media

POREX Pipette Filter Media

Pipette Tips | Serological Pipettes | ESR Tubes

POREX Pipette Filter Media are the porous design solutions chosen by a broad spectrum of pipette and pipette tip manufacturers to help eliminate aerosol bypass, sample carryover and the passage of aqueous-based liquid from sample to equipment. POREX Pipette Filter Media exemplifies the critical design standards and precision molding required for today’s technological products. POREX Makes It Possible.

  • Allows for maximum air flow to ensure pipetting accuracy
  • Helps prevent aqueous liquid bypass in the event of over-pipetting (when used within volume limits of compatible pipetters)*
  • Helps prevent trace carryover by aerosols generated during sample aspiration*
  • Offers automation-friendly designs and color-coding capability

Why Choose POREX Pipette Filter Media?

POREX Pipette Filter Media helps deliver precision, accuracy, reliability and close tolerance to meet the most challenging pipette filter applications. The unique structural characteristics of our lightweight, porous and fiber materials result in design flexibility and long-term value advantages. Fabricated from fiber or porous materials – polyethylene (PE), high-density polyethylene (HDPE) and polypropylene(PP) - POREX Pipette Filter Media provides superior resiliency for a good compression fit and a strong, durable construction to withstand the rigors of automated equipment assembly. Additionally, our media is chemically-resistant to withstand most acids and bases and has an excellent appearance for a quality image. 

Pipette Tip Filters


Manufactured from a variety of hydrophobic HDPE and PP materials, POREX® Pipette Tip Filters are specifically designed to help prevent liquid bypass and airborne contaminants from being drawn into the tips, thus protecting the pipette body from contaminants. POREX Pipette Tip Filters offer the ultimate in protection against contamination when working in applications such as DNA amplification and sequencing and other techniques involving the use of vaporous, radioactive, biohazardous or corrosive materials. 

Serological Pipette Filters 

Serological pipettes are designed for use in a wide variety of scientific dispensing applications. Porex filters, manufactured from fiber or PE materials with color-coding capability, fit securely in the upper end of the pipette to help prevent trace carryover contamination caused by aerosols and allow for engineering and work practice control finished products. POREX® Serological Pipette Filters enable easy, clear and rapid identification of the pipette volume in use. 

ESR Tubes 

The Erythrocyte Sedimentation Rate (ESR) determination is a commonly performed laboratory test used to screen for the possible presence of disease or abnormality in the body. The test measures the distance red cells have fallen after separating from the plasma in a vertical ESR pipette and offers simple, safe, economical and highly-accurate Westergren ESR determinations. POREX® ESR Tube Filter Media are designed to draw blood up to the zero mark and act as a protective barrier that stops hazardous substances from escaping through the top of the pipette. 

Click here to download the Porex Pipette Filter Media PDF.