For Vicki, Alma and others who have been asking about the formula for
mixing ferric nitrate:
crystals are mixed 55% by weight in water (mixture should be the color of
coffee as stated earlier), the solution works on silver much like ferric
chloride does on copper - slowly and evenly.
Supplier: Photographers’ Formulary (1-800-922-5255) cat. # 10-0525 10g @
$3.50 100g @ 8.75 1 lb @30.50 may require 14.00 hazzard
charge
This company also sells ferric chloride and oxalic acid (to remove ferric
chloride stains from clothing for the messy among us)
I am not associated with this company in any way.
Donna in WY