I took mine to a scrap yard that had an X-ray gun. They only tested one pig but the guy I got them from said most of it was from the same batch. He said they used to send some to a lab and the lab would send them back alloy and tell them how much to add to bring it back up to spec. At least I know it's got the right 3 metals in it and nothing else. I plan to mix it with wheel weights as needed.

Bb