I have in the past made Flemish toner directly from Selenium metal. My only problem is the very short shelf life of the mixed toner. Selenium metal is easily purchased and inexpensive. I am fully aware of the toxicity situation. Is it possible to make Sodium Selenite form Selenium metal? If so how would it be done. I know that it can be had as a mineral supplement in capsules but I would get very little chemical woth a great deal of additives. Does any one have a source for Sodium Selenite? About 15 grams would make approx. (1) gallon of a toner similar KRST.