If a contractor is using a poorly maintained compressor to supply air for abrasive blast cleaning and conventional airspray, the coating inspector should perform a

If a contractor is using a poorly maintained compressor to supply air for abrasive blast cleaning and conventional airspray, the coating inspector should perform a
A . dry film thickness (DEI) measurement.
B . wet film thickness (WFT) measurement.
C . blotter test for the presence of oil and water.
D . vial lest.

Answer: C