To meet European standards for purity, Jost Chemical (St. Louis, MO) manufactures mineral salts with very low levels of heavy metals. Each of the 25+ chemical salts has a specification for Pb, Cd, and As of 1 ppm maximum and Hg of 0.1 ppm maximum.
For more information, call (314) 428-4300 or visit www.jostchemical.com/uplhm.html.


