patina and crystals blue vitriol copper plates anodes galvanic installation close |
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| navigate by keyword : abstract anodes blue bluestone bricks bright chemical chemistry color copper crystal crystals electroforming electrolysis fungicide galvanic industry inorganic laboratory mineral object patina plates science sulfate sulphate vitriol |
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| Patina and crystals of blue vitriol on copper plates anodes of galvanic installation close-up, copper sulphate, copper sulfate, bluestone background, electroforming plates |
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