What is the particle size standard for chemical testing oil (lubricating oil, EH oil)?

The test results are level 5, level 6 and level 7, which are in compliance with the NAS?1638 standard. The American Aerospace Industries Association (AIA) released the NAS1638 standard in January 1984. NAS1638: Maximum number of particles per 100ml, size, range (μm), grade 5~15, 15~25, 25~ 50?50~100?More than 100? 00?125?22?4?1?0? 0?250?44?8?2?0? 1?500?89?16?3?1*? 2?1000? 178?32?6?1*? 3?2000?356?63?11?2*? 4?4000?712?126?22?4*? 5?8000?1425?253?45?8*? 6? 16000?2850?506?90?16*? 7?32000?5700?1012?180?32? 8?64000?11400?2025?360?64? 9?128000?22800?4050?720?128? 10?256000 ?45600?8100?1440?256? 11?512000?91200?16200?2880?512? 12?1024000?182400?32400?5760?1024?

Basically, this is what happened at the level. Like it should be normal, this has a lot to do with your sampling. If it reaches level five, it is a very good oil.

The cleanliness level of the oil can be controlled by the filtering equipment

Prodi Measurement and Control provides professional oil particle size analyzer 029-85643484