Uploaded August 2020 | Updated September 2026, 2 weeks ago

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Azo dye @CLEAPSS. See youtu.be/lxOEvBMd1Sw. Diazonium salt sol is absorbed into cotton wool & placed into alkaline naphthol & phenol. More micro than the RSC Learn chem method, reversed procedure & less washing up by reusing discarded blister packs. Hope there is more to come