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Nearly 20 percent of marijuana products in California have failed tests for potency and purity since the state started requiring the checks on July 1. (Adobe Images)

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Big safety testing failure rate for California pot products

Nearly 20 percent of marijuana products in California have failed tests for potency and purity since the state started requiring the checks on July 1, a failure rate some in the industry say has more to do with unrealistic standards and technical glitches than protecting consumer safety.