Problem Solving Forum
November 10 - November 14, 2014
How clean must the compressed-air supply be for blast cleaning, blow down and painting? How is cleanliness of the air determined?
FON NELSON of CNIC on
November 19, 2014:
Compressed air used for blasting, blowing down and ...read more Compressed air used for blasting, blowing down and painting must be free from water and oil, according to ASTM D 4285, Standard Test Method for Indicating Oil or Water in Compressed Air, often called the "blotter test."