The Cleaning, Polishing and Protective Waxing of Brass and Copper. Ottawa: Canadian Conservation Institute, 1995.

Ottawa: Canadian Conservation Institute, 1997. References and acknowledgements References

loss of portable, valuable or rare objects.

attack organic material associated with metals.

corrodes metals above about 65% relative humidity.

corrodes metals (from salts and acids on bare hands).

cleaning chemicals (especially aerosols).

They are often used as a basis for assessing the risks to a collection: Contaminants and pollutants The following factors can affect the deterioration of objects in collections. For more information, see the Canadian Association of Professional Conservators (CAPC) website. See Canadian Conservation Institute (CCI) Notes (9 series) available on the CCI website. Provide better ventilation to dilute source of problem (volatile organic acids) and consult a conservator about safe corrosion removal and disposalĭifficulty finding conservation resources Store inside a sealed plastic bag better yet seal inside a plastic bag containing dry silica gel and activated charcoal dry silica gel) to the bag and then resealīlue-green corrosion on copper alloys inside wood caseĪdd ventilation to case consider painting case

Break seal by cutting small holes in bag to promote ventilation or.

Leave alone to save information about history of use paste of precipitated calcium carbonate and water) Problems and Solutions ProblemsĬlean only when necessary use softest abrasive for the job (e.g.

Provide reference material for further readingĪuthors Bart Ankersmit, Conservation ScientistĬultural Heritage Agency of the Netherlands.

Offer tips for the proper care of metal objects.

Act as a visual guide to the problems and damage occasionally observed in metal collections.

Help staff responsible for historic houses, museums, churches.

The PDF format of this text is also available for purchase as a spiral-bound colour-print booklet from Lana Chan, Parks Canada. Recognizing metals and their corrosion products.By Bart Ankersmit, Martina Griesser-Stermscheg, Lyndsie Selwyn and Susanne Sutherland

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