What Is the Level 5 Standard for Compressed Air Filtration

What is Level 5 in the compressed air filtration rating standard?

In ISO 8573-1:2010 “compressed air Part 1: pollutants and purity grade” standard, the filtration grade of compressed air is defined by three key indicators: solid particles (particle size and concentration), water (dew point temperature) and oil (oil content). Among them, “Grade 5” refers specifically to the purity grade of solid particles.

ISO specific requirements for Level 5 in 8573-1

according to this standard, the level 5 particle grade indicates that the maximum allowable particle diameter is ≤ 5 μm, and the number of particles in the air per cubic meter cannot exceed 1,000,000 (that is, 1 × 10)/ m³).

• Maximum particle size:≤5 μm (Micron)
• maximum particle concentration:≤ 1 × 10 pieces/ m³ (Under specified sampling conditions)
• for typical application scenarios:general Factory pneumatic tools, non-critical spray paint, packaging equipment and other working conditions with medium air quality requirements

note: Level 5 only describes particulate matter indicators; The complete purity level must be marked with water at the same time (for example, “-3” indicates that the pressure dew point ≤ -3℃) and oil (for example, “2” means oil content ≤ 0.1 mg/ m³) level, for example, 5.3.2 “.