Pipe screens are toxic?!
Answers: If pipe screens are toxic, which type is the least (i.e brass, steal etc.)? does all this apply when you are using a vaporizer, in other words is it only toxic when the screens come into direct contact with the flame? i know glass is the best but they cannot be used with ground herbs. thanks!
If you are referring to a hookah screen, the stainless steel would be the best.