File talk:Scroll ink materials.JPG

Latest comment: 3 years ago by MarkMLl in topic Copper sulphate?

Copper sulphate?

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Minor query: What's in that pot? copper sulphate would normally be blue, not red. Many inks contain iron sulphate (copperas), but it's similarly blue. MarkMLl (talk) 14:55, 15 November 2020 (UTC)Reply