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They were extracted with 10 mL of HPLC-grade acetonitrile which was spiked with 900 L of a 2.03 mM solution of 1,2,3,4-tetrachlorobenzene (Sigma-Aldrich), used as an internal standard to account for losses in the extraction process (6070% yield)

French chemists who have tested this plan are widely at variance

Philip Morris self-reported its supply of non-compliant cigarettes to the ACCC and initiated a voluntary recall on 17 October 2015 after its test results confirmed the cigarettes did not comply with the Reduced Fire Risk Standard