What is the ISO standard for particle count?

The ISO standard for particle count, specifically in the context of hydraulic fluids, is ISO 4406. This standard provides a method for determining the level of contamination by solid particles in fluids, which is essential for ensuring the reliability and longevity of machinery and systems using these fluids. ISO 4406 uses a coding system to categorize the number of particles within specific size ranges, allowing for a standardized way to communicate contamination levels and establish cleanliness targets.

By adhering to this standard, industries can better monitor and control the cleanliness of hydraulic and lubrication fluids, ultimately improving equipment reliability and reducing maintenance costs. Understanding and implementing ISO 4406 is fundamental for professionals involved in reliability engineering and asset management.