Cleanroom Testing and Validation Instruments

Aerosol Generator

A portable droplet aerosol generator for introducing stable challenge concentrations during HEPA filter integrity tests and cleanroom airflow studies.

Steady output establishes a consistent upstream filter challenge.
Adjustable aerosol delivery spans compact terminals and larger air systems.
An internal pump and cleanable liquid path support mobile testing.

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Product Introduction

This aerosol generator atomizes a compatible test liquid into a repeatable droplet aerosol for filter leakage testing, cleanroom qualification and laboratory work. A corrosion-resistant reservoir, precision nozzle assembly and adjustable air supply provide controlled output without exposing the liquid to unnecessary contamination. Portable configurations use an internal pump, while compressed-air versions offer high output for larger air-handling systems.

Key Features

Stable droplet output supports repeatable upstream challenge concentrations.

Adjustable generation rate adapts to cabinets, terminal filters and larger duct systems.

Stainless-steel reservoir and cleanable nozzle path simplify changeover between compatible liquids.

Portable internal-pump options operate where a compressed-air connection is unavailable.

Visible liquid level and protected fill port reduce handling errors during field work.

Compact construction allows placement close to the intended aerosol injection point.

Customer Product Concerns

Field aerosol generation must hold the target challenge concentration despite limited injection space or air supply while allowing the reservoir and liquid path to be cleaned fully between test fluids.

An unstable aerosol challenge can make leak-test results difficult to compare.Regulated atomizing air and repeatable nozzle settings provide a controlled generation rate after warm-up.

Residual test liquid may contaminate the next application.A drainable stainless reservoir and accessible nozzle path support documented cleaning between liquids.

Field locations may not provide suitable compressed air.Select a battery-powered internal-pump configuration for independent portable operation.

Excessive aerosol can overload the downstream photometer or particle counter.Adjustable output and staged nozzle activation allow the operator to approach the target concentration gradually.

Typical Applications

HEPA and ULPA filter integrity testingCleanroom and laminar-flow cabinet qualificationFilter media efficiency developmentSmoke-detector and aerosol-instrument testingLaboratory generation of DEHS, PAO or compatible salt-solution aerosols

Technical Parameters

The table outlines representative reservoir, nozzle, pump body, connection, material, and dimensional configurations for a portable liquid-droplet aerosol generator, with selection matched to the filter system and injection method.

Core Material	Passivated stainless-steel liquid reservoir with precision atomizing nozzle, seals and regulated air circuit
Panel Thickness	Typically 1.0–1.5 mm for the protective enclosure panels
Effective Width	Approximately 180–300 mm according to reservoir and pump configuration
Maximum Length	Approximately 300–500 mm including handle and aerosol outlet
Steel Facing Thickness	Typically 1.0–1.5 mm stainless steel
Core Density	Not applicable; no insulation core is used (0 kg/m³)
Thermal Conductivity	Approximately 14–16 W/(m·K) for stainless-steel reservoir and enclosure parts
Surface Finish	Fine-brushed passivated stainless steel with chemical-resistant dark polymer controls
Joint Type	Threaded fill cap, regulated compressed-air inlet and barbed or threaded aerosol outlet
Customization	Available based on the intended application and operating environment.

Available Options

Internal pump or external compressed-air operationSingle or multiple atomizing nozzlesDEHS, PAO or compatible salt-solution configurationBattery and mains powerFlexible aerosol outlet hose and injection adaptersStainless transport case

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