These six restricted substances are:
2. Hexavalent Chromium
5. Polybrominated Biphenyls, PBBs
6. Polybrominated Diphenylethers, PBDEs
Accordingly, Westlake Pipe & Fittings DOES NOT intentionally add these substances to any of our products. In addition; Westlake Pipe & Fittings PVC products DO NOT contain any antimony, barium, zinc or other heavy metals, except for tin based stabilizers and titanium dioxide pigment, both of which are approved by the NSF International Organization for potable pipe and fittings.