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[Sirius Black]

· Identify the use of electrolysis as a means of cleaning and stabilising iron, copper and lead artefacts
Isn't the electrolysis process used to restore the artefacts rather than cleaning and stabilising?

 

[Casmira]

hmmm thats a good question, my guess is the cleaning refers to other shit that may form on surface of an artefact that makes it unrecogniseable, ie. iron sulfide