There are three standards currently in force that refer directly to the quality (purity) and the analysis of compressed air: ISO 8573/ISO 12500/ISO 7183.
The one used most is ISO 8573. This standard defines the methods and tests to be used to determine the contaminants present in compressed air.
Classification of contaminants according to ISO:
Solid particulate
Residual humidity
Residual oil (including vapour) content
Virgin Atlantic’s Flight100 saved 95 tonnes of CO2 in first SAF flight
Good comment. I think these reports are different from many others , in that they were prepared outside the government and the issues, they raised, of...