It's not very precise so I imagine the exact amount is of little
consequence but the amount of sulfite recommended is a "pinch".
On 6/19/2016 6:57 PM, Myron Gochnauer wrote:
When mixing the formula from scratch its probably a good idea to boil the water first to drive off dissolved air to reduce the amount of oxidation of the metal.
I never had a problem if I first added at little bit of sulphite to the water before adding the Metol. I don’t remember how much. Maybe a teaspoon or so. The sulphite was supposed to prevent oxidation. The resulting Metol solution would have no discernible tint. The rest of the sulphite could then be added.
