Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Inspection post passivation for closed / non visible systems
March 2, 2009
In ASTM A380
, several methods are suggested for inspection of cleanliness post passivation: Visual inspection; wipe tests; residual pattern; water-break test; free iron test such as water-wetting or drying; high-humidity test; and copper sulphate
⇦this on
eBay or
Amazon [affil links] test. Precision inspection shall be performed by solvent-ring test, black light inspection, atomizer test, and ferroxyl test.
How can a closed system be inspected for proper cleanliness and passivation where most areas are not accessible to the eye or a boroscope without breaking the system open?
Thanks,
Director, Life Sciences - Singapore
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