Finishing Publications &
Metal Finishing Information Services

Online Resources - Troubleshooting

Close window

See your problem here? Get the solution now!

Subscribe to and access all the Troubleshooting Tables


Within the next few weeks you will be able to purchase the full version of tables online (for delivery as a pdf file via email). To join our mailing list and be the first to hear about this service sign up here

Anodised aluminium Sulphuric acid process


Typical cause

Analysis to confirm cause


Black or brown smut or stain

Subscribers only

Bloomed anodic film

Subscribers only


Subscribers only

Dye uptake inconsistent

Subscribers only

Pitting of the aluminium surface

Subscribers only

Soft coating

Subscribers only

Surface marking through inadequate post anodising sealing

Subscribers only

Thickness low

Subscribers only

Back to top Close window