Hi Richard, Thanks for your response!
I think the technique of chemistry and pharmacy of 60 years ago may turn out to be more germane than current techniques. After all, CS may remain a populist, grassroots appropriate- technology for a long time to come. For the same reason, I prefer off-the-shelf materials people can buy in food stores, or over-the-counter in pharmacies. The salt substitute made by Morton Salt Company is labelled as potassium chloride (at 610mg per 1/4tsp = 1.2g) with additives of fumaric acid, tricalcium phosphate, and monocalcium phosphate (no amounts listed.) A purer source of KCl would be preferable. Is KCl readily available over-the-counter in drugstores? It may be good to use other salts with chloride anions too. Cations of valence +1 would be easier to use than higher valences, because more mass is needed to precipitate a given amount of silver. So, the weighing would be easier. Can you recommend any other chloride salts with +1 valence cations? Thanks for your advice! Best regards. Matthew