Here is a revised version.
Water (boiled to get rid of dissolved oxygen) 568 g
Sodium sulphite crystals. 42g
Sodium bisulphite 36 ml
Potassium bromide O. 5g.
(a small pinch)
Add 14 ml of sulphuric acid to 200 ml of water then add 115g of sodium
sulphite ( crystals ) and shake until dissolved.
The recipe comes from the 14th edition of the Illiffe Dictionary of
Photography from around 1936. I assume that the first edition, the format
is the same, was that edited by Walter Woodbury in 1890. It was the
first dictionary that I read from cover to cver.
Terry please clarify metric measurements - they got jumbled up in the
I probably jumbled them. I've got a rotten cold. Sorry.