I like to keep a potassium bromide solution around for a number of purposes. I would just weigh your large crystals, make the 10% solution and use it as you need. It will last forever. Then you can use it to mix developers of all kinds, as well as as a restrainer-additive for your print developer and as a component of a rehalogenating bleach together with a potassium ferricyanide solution.

Best,

Doremus


www.DoremusScudder.com