https://heavymetalcertified.com/program/two-pathwaysPublished revisions of this Heavy Metal Certified page.https://heavymetalcertified.com/program/two-pathwayshttps://heavymetalcertified.com/program/two-pathways#revision-f6c77583f5ee379eMon, 21 Sep 2026 05:19:06 GMTThe default HMTc limit is the strictest applicable government maximum. Where the program sets a number itself, the priority toxics and the cells no government regulates, it uses two pathways: a clean-subcategory limit near P97 (~90% pass) and a dirty-subcategory limit near P45 (~40% pass).