Air care
C and R Testing can help with your air-care needs.
The information below gives the maximum allowable levels of contamination.
Contaminant
Maximum allowable to BS EN12021
Oxygen content
(21 ±1)% by volume (dry air).
Carbon Monoxide content
Shall be as low as possible but not exceed 5 ml.m-3 (5 ppm).
Carbon Dioxide content
Shall not exceed 500 ml.m-3 (500 ppm).
Lubricant content (droplets or mist)
Shall not exceed 0.5 mg.m-3.
Water
There shall be no free liquid water. The maximum water content of the air measured at:
- compressor system outlet for filling cylinders, should not exceed 25 mg.m-3;
- a cylinder outlet, cylinder pressure from 40 to 200 bar, should not exceed 50 mg.m-3;
- a cylinder outlet, cylinder pressure >200 bar, should not exceed 35 mg.m-3.
Other Contaminants
5ppm
Odour and Taste
The air shall be without significant odour or taste.
Clenliness
No dust, dirt, metallic particles, toxic or iirritating ingredients
