In much the same way that dealing with a patchwork of state regulations often has U.S. companies shifting practices long before the federal government requires them to, complying with assorted international chemical regulations, not to mention supplier codes of conduct from large companies, may have U.S. companies eliminating the most toxic chemicals whether TSCA is reformed or not.

FORBES: How International Regulations Are Changing American Supply Chains

Nano bar codes are the molecular versions of traditional bar codes--metal nano-particles that have specific, recognizable chemical fingerprints that can be read by a machine, perhaps a UV lamp or optical microscope.

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