What should I pay attention to when using a dust particle counter to detect leaks in high-efficiency filters?

Author:Jason Peng
Cleanroom Engineering Technology Manager of Deiiang Company.

Product R&D Manager of GDC Inc. Cleanroom Equipment Manufacturing Company.

Executive Director of Guangdong Cleanroom Industry Association of China.

Engaged in R&D of related products for 15 years, with rich relevant technical experience
2024-11-22 | Visits:

Overview of Particle Counters

Particle counters measure the size and distribution of airborne dust particles. They have evolved from microscopes to advanced instruments like laser and multi-channel particle counters.

Wide Range of Applications

These instruments are used in various sectors, including pharmaceuticals, Electronics, environmental protection, hospitals, and research institutions for monitoring air cleanliness.

ExperimentCountLiquidParticles Documentation

High-Efficiency filter leak detection

To check for filter leakage, aerosol generators and dust particle counters are commonly used, ensuring the integrity of filters and preventing contamination in cleanrooms.

Laser Particle Counter for leak detection

Laser particle counters detect high-efficiency filter leaks by identifying excessive suspended particles in the clean area, ensuring proper filter function.

ULPA + HEPA Filters | HVAC Scheduled Maintenance Plans

Working Principle of Dust Particle Counters

Dust particle counters operate on light scattering principles, using a photomultiplier tube to detect and analyze particles' size and quantity for Cleanroom monitoring.

Environmental Conditions for Testing

Testing should occur with controlled temperatures (18-26°C) and humidity (45-65%), with specific room pressure differences to ensure accurate particle measurement and CleanRoom integrity.