Pesticide Residue and the Dirty Dozen

The ‘Dirty Dozen’ published by the Environmental Working Group (EWG) is a list of produce containing the highest pesticide residue levels. In 9 years, apples have appeared in the top three most contaminated items eight times and has been the most contaminated item five times (followed by peaches and celery).

Check our infographic below for the list of the ‘Dirty Dozen’.

For details on SPEX CertiPrep’s Pesticide CRMs, contact us at 1.800.LAB.SPEX or email at or visit



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