ASTM D4285 Standard Test Method for Indicating Oil or Water in Compressed Air
7. Interpretation of Results
7.1 Any indication of oil discoloration on the collector shall be cause for rejection of the compressed air for use in abrasive blast cleaning, air blast cleaning, and coating application operations.

7.2 Any indications of water contamination on the collector shall be cause for rejection of the compressed air for use in those applications where water is detrimental, such as abrasive blast cleaning, air blast cleaning, and coating application operations.

8. Precision and Bias
8.1 No precision or bias statement has been established for this test method.

9. Keywords
9.1 compressed air; oil and water in compressed air