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1kg (2.2lb.) copper etchant. Ammonium Persulphate crystals are used as an alternative to traditional ferric chloride to produce a cleaner copper etchant solution. 1 kilogram of crystals produces 4 litres of etching solution. Excellent for situations where the visibility of the etching process is beneficial (instructional use). Specs Datasheet
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🇺🇸 Ship from USA · On Agora since 2026
$39.70