actually it is preferred to fill a large tub with a known amount of water and then
use 1/8 teaspoons to work out what is actually needed for neutralization. I then
double that amount. sodium thio is safe at 10X the needed dose. Ingrid

"RichToyBox" wrote:

I use a small digital postal scale, but before that used a weight watchers
scale. Just went and measured in a measuring cup and 500 grams of sodium
thiosulfate is almost exactly 2 cups.



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