Cleanroom Testing and Validation Instruments

Filter Leak Test System

A modular test station for applying controlled airflow and aerosol challenge while manually or automatically scanning complete HEPA and ULPA filter elements for local leakage.

Coordinated aerosol, airflow and full-face leak scanning.
Adaptable fixture for varied HEPA and ULPA formats.
Traceable local penetration and pressure-drop results.

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Product Introduction

This filter leak test system integrates a sealed filter holder, adjustable airflow circuit, upstream aerosol conditioning and downstream scan measurement into a coordinated test station. Interchangeable adapters accommodate different filter formats, while the control software records pressure drop, challenge stability and local penetration across the media and frame. Manual and automated scan configurations support production quality control, filter development and independent laboratory verification.

Key Features

Sealed horizontal filter fixture supports repeatable element mounting.

Controlled test airflow maintains the selected face velocity.

Upstream aerosol generation and dilution stabilize the challenge concentration.

Coordinate-guided scanning covers media, frame and seal regions.

Differential-pressure measurement links leakage results with filter resistance.

Configurable adapters accommodate multiple filter dimensions and constructions.

Customer Product Concerns

Production filter testing must control fixture bypass, challenge uniformity and scan coverage while preserving a clear record of the actual test airflow.

Different filter sizes can create bypass around the test fixture.Interchangeable gasketed adapters and controlled clamping seal the test element around its full perimeter.

An unstable challenge concentration can distort local penetration results.Upstream conditioning, dilution and reference sampling monitor aerosol stability throughout the scan.

Manual probe movement may leave gaps in surface coverage.Coordinate guidance or an automated traverse maintains defined scan spacing and speed.

Leak results without airflow and pressure context are difficult to compare.Synchronized airflow and differential-pressure channels store operating conditions with each test.

Typical Applications

HEPA and ULPA production leak testingFilter development and design verificationLocal efficiency scanningIntegral separation-efficiency measurementIndependent filter laboratory quality control

Technical Parameters

Typical modular test-station construction is summarized below; fixture size, airflow capacity and detector arrangement are selected for the target filter range.

Core Material	Powder-coated steel test frame, stainless airflow duct, sealed filter holder, aerosol-conditioning circuit and scan instrumentation
Panel Thickness	Typically 1.5-3.0 mm for enclosure and duct panels
Effective Width	Approximately 610-1500 mm according to supported filter face size
Maximum Length	Approximately 1800-4500 mm for the assembled airflow and scan modules
Steel Facing Thickness	Typically 1.2-2.0 mm steel or stainless-steel facing
Core Density	Approximately 7850-8000 kg/m³ for structural steel and stainless duct components
Thermal Conductivity	Approximately 14-50 W/(m·K) according to stainless or carbon-steel component selection
Surface Finish	Light-gray powder coating with brushed stainless test surfaces and dark safety guards
Joint Type	Gasketed modular duct flanges, quick-change filter adapters and sealed sampling connections
Customization	Available based on the intended application and operating environment.

Available Options

Manual or automatic XY scanningPhotometer or particle-counter detectionMultiple aerosol generator typesCustom filter-holder adaptersBarcode and report integrationExpanded airflow range

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