You can do generic tests like testing for toxicity, but that won't give you the full picture. If you don't have a list of all the input raw materials, intermed

You can do generic tests like testing for toxicity, but that won't give you the full picture. If you don't have a list of all the input raw materials, intermediates, by-products, impurities, surface materials that can leech into the final product, etc; you can't test for them.