pet container manufacturer&39s association pcma today said the results of the tests conducted by sgs did not find any leaching of heavy metals, formaldehyde, endocrine disruptors, colors etc in pet containers used in packaging of various substances.pcma had recently engaged sgs, a leading industrial research firm, to conduct rigorous tests to find out the facts that whether packaging of pharmaceutical and food products results in leaching or contamination in pet polyethylene terephthalate containers.pcma said it had engaged sgs after a series of allegation levied by a few ngos stating t