What does a particle count of 0 - 10 indicate in the ISO Code?

A particle count of 0 - 10 in the ISO Code indicates a range that corresponds to 0 - 5 particles per milliliter (pt/ml). The ISO 4406 standard is used for the classification of particulate contamination in fluids, specifically in hydraulic fluids and lubricants. This standard establishes cleanliness levels based on particle counts, allowing for effective monitoring of fluid quality.

The range of 0 - 10 signifies a very low level of contamination, which is crucial for maintaining the reliability and longevity of equipment. Monitoring particle counts in this way helps ensure that systems are operating in optimal conditions, reducing the risk of wear or failure due to particulate contamination.

The other options incorrectly suggest much higher particle concentrations, which would not align with the indicated ISO Code range of 0 - 10. Understanding this code and its implications is essential for reliability engineers in assessing and managing the cleanliness of fluids in machinery and industrial systems.