ASTM D4285 Standard Test Method for Indicating Oil or Water in Compressed Air
6. Procedure
6.1 Use either the absorbent or nonabsorbent collector.
6.2 Position the collector within 24 in. of the air-discharge point, centered in the air stream.
6.3 Adjust air discharge so that the collector remains intact during the test. Allow air to discharge onto the collector for a minimum of 1 min.
6.4 Visually examine the collector for the presence or absence of oil or water, or both.
