Hi everyone, I want to start an experiment where we test vitamin supplements for traces of coal tar and petroleum, we will be doing it by placing the vitamin supplements in our ovens for 10 minutes on 180 degrees. When it comes out with black spots, the vitamin contains either petroleum or coal tar, which is not good for your health.
If you want to take part, please feel free to do so and send me your photos via email. Would love to see which supplements on the market today is synthetic made out of ground rocks.
