britt wrote:I think this is great, but we should all keep in mind the fact that lead contamination is only one of many issues. I don't know if there's any way to test for other substances, such as industrial dyes, chemicals, etc. IMO those are just as important as lead.
edkrueger wrote:You should just test the bottom of the pot.
eanglin wrote:The test for China dinnerware and other food grade items involves putting an acid solution into the object, allowing it to soak for a predetermined time, and then testing the acid solution for lead. In the lab I worked in we used a infrared spectrophotometer to determine the precise quantity of lead released into the acid solution or contained in the paint sample.edkrueger wrote:You should just test the bottom of the pot.
Such preciseness isn't required for home testing of antiques, but unless you are leach testing, the results you are getting from home testing kits aren't likely to mean a thing- the amount of time the chemical has to react with the substrate is probably insufficient to leach enough lead to get a strong color reaction unless truly huge amounts of lead are present.