I am testing for lead in cosmetics, specifically foundation, lipstick, and eyeshadow. My hypothesis is that the darker the make up the more lead it will contain.
I tried using Abotex lead testing kit which states that we can leach out the lead from these products using vinegar and then test a small amount of the vinegar using their indicator solution. Using their color chart, I am supposed to be able to semi-quantitate the lead concentration.
I followed their instructions but was not able to get any positive results, even when I tested lipstick that tested positive(7ppm) by the FDA (http://articles.washingtonpost.com/2012 ... metics-fda
Through my research I’ve found that there is a machine called XRFanalyzer that can detect lead but that is very expensive to rent. Is there another machine easily accessible and not so expensive or is there another chemical method to leach out and test for lead in cosmetics? Or is there any way that one of your companies may be able to let me use one for less cost?