ISO 8573-1

Class > 0.1 - ≤ 0.5 (μm) > 0.5 - ≤ 1.0 (μm) > 1.0 - ≤ 5.0 (μm) Dew Point Oil (mg/m3) Microbial (CFU)
0 *User or Supplier *User or Supplier *User or Supplier *User or Supplier *User or Supplier ----
1 ≤ 20,000 ≤ 400 ≤ 10 ≤ -70°C / -94°F 0.01 ----
2 ≤ 400,000 ≤ 6,000 ≤ 100 ≤ -40°C / -40°F 0.1 ----
3 Not Specified ≤ 90,000 ≤ 1,000 ≤ -20°C / -4°F 1 ----
4 Not Specified Not Specified ≤ 10,000 ≤ +3°C / +38°F 5 ----
5 Not Specified Not Specified ≤ 100,000 ≤ +7°C / +45°F ---- ----
6 ---- ---- ---- ≤ +10°C / +50°F ---- ----

*As specified by the equipment user or supplier

Microbial

Particle Counting