Revision history of "File:Fluorescein.jpg"

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  • (cur | prev) 19:29, 23 May 2019Diachrynic (Talk | contribs). . (139 bytes) (+139). . (Fluorescein made from heating a mix of resorcinol and phthalic anhydride and sulfuric acid, boiling in NaOH and crashing out the dye in HCl)