30 Sep '15, 4pm

Clean recycled glass = higher recycling rates + healthier #greenbuilding materials + more #greenjobs

Clean recycled glass = higher recycling rates + healthier #greenbuilding materials + more #greenjobs

In California, cullet used in building products does not achieve the European limits on heavy metal content, but it is far cleaner than the 1000 ppm heavy metal content allowed by the ASTM standard. The recycled glass used to make fiber glass insulation is reliably low in toxic metals because the sole supplier of recycled glass to the state's insulation factories produces cullet in compliance with the California's Toxics in Packaging law. This law restricts the heavy metal content of four heavy metals (lead, cadmium, mercury, and hexavalent chromium) to 100 ppm, or ten times lower than the ASTM standard. [4] Quality controls designed for bottle producers have the incidental side benefit of providing insulation cullet that is compliant with packaging regulations. Therefore, we have determined that cullet as used in fiber glass insulation made in California does not raise si...

Full article: http://healthybuilding.net/news/2015/09/30/clear-lessons-...

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