Filter Integrity Testing Service

Filter integrity testing is a cornerstone of contamination control in critical applications—particularly in pharmaceutical manufacturing, biotechnology, food processing, and healthcare. It ensures that filters meet stringent performance criteria and maintain sterility throughout their lifespan.

At Validair Engineers, we specialize in product-specific filter testing that validates both performance and compliance, offering peace of mind to quality managers, auditors, and regulators alike.

What is the Integrity Test for Filters?

Filter integrity tests evaluate whether a filter is intact and functioning as designed—free of leaks, ruptures, or defects. Common methods include:

Bubble Point Test: Determines the pressure required to force liquid through the largest pores.

Diffusion Test: Measures gas flow through a wetted filter to detect defects.

Pressure Hold Test: Assesses the filter’s ability to maintain pressure over time.

Water Intrusion Test: Used primarily for hydrophobic membrane filters.

These tests are conducted pre-use and post-use to ensure performance consistency and compliance with GMP and ISO standards.

What Requires Filter Integrity Testing?

Integrity testing is mandatory for filters used in:

Sterile Filtration of Liquids & Gases

Final Product Filling in Pharmaceuticals

Biotech Applications Involving Cell Cultures

Medical & Laboratory Devices with High Contamination Sensitivity

Whether you’re using membrane filters, cartridge systems, or depth filters, integrity testing guarantees filtration reliability and sterility assurance.

Product-Specific Testing Capabilities

Validair Engineers offers tailored testing for:

Hydrophilic and Hydrophobic Filters

Liquid and Gas Filtration Systems

Single-use and Reusable Filter Assemblies

Validair Engineers isn’t just a service provider—we’re a quality assurance partner. We help ensure your filtration systems perform flawlessly, every time.