How to make and use a precipitated calcium carbonate silver polish: NM95-57/9-11-2016E-PDF
"When tarnish removal is necessary and acceptable, one of the options is to use an abrasive polish. CCI Note 9/7 Silver — Care and Tarnish Removal lists several kinds of abrasive polishes. Most are commercial polishes, but one is simply a slurry of precipitated calcium carbonate in water. The current Note discusses how to prepare and use silver polish made with precipitated calcium carbonate. This polish is considered mild because it does not remove too much of the silver under the tarnish. Using this silver polish avoids using commercial polishes, which may contain unknown abrasives or additives that are harmful to the object. The procedure described here is suitable for silver objects (either silver-plated or a silver alloy) that can be rinsed with water without damaging associated materials like wood or ivory. A laboratory and ventilation are not required unless organic solvents are used. Prior to using a chemical or solvent, consult its safety data sheet (SDS) for health and safety information"--Introd., p. 3.
|Title||How to make and use a precipitated calcium carbonate silver polish|
|Series Title||Canadian Conservation Institute (CCI) notes,|
|Publication Type||Series - View Master Record|
|Other Language Editions||[French]|
|Electronic Document|| |
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|Note||Issued also in French under title: Comment fabriquer et utiliser un agent de polissage de l’argent à base de carbonate de calcium précipité. Cover title.|
|Number of Pages||18 p. :|
|Subject Terms||Artefacts, Precious metals, Conservation, Restoration|
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