Dichromate (from B&H or Photo. Formulary) honestly doesn't seem to be that expensive, and I'm aware of the safetly precautions that must be followed. However, I am still unfamiliar with the quantities. Would I be correct in assuming that its a weak (maybe 1 - 5 grams per liter) aqueous solution of dichromate with a slight amount of soemthing to make the bleach acidic? Does anyone have specific proportions?