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RAF Pyro-Metol

part A

metol 3.9 g
potassium metabisulfite 4.4 g (or substitute 5.1 g sodium metabisulfite)
pyrogallol 4.4 g
potassium bromide 1.6 g
water to make 1 liter

part B

sodium carbonate (crystal) 108 g
water to make 1 liter

Mix one part...
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Author
David A. Goldfarb
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