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Phenova WP studies are conveniently available every month. All standards comply with EPA, NELAC, and state-specific criteria. Sufficient standard is provided for all of your testing needs, including NELAC's requirement to analyze method-specific PT standards.
WP Organic PT Standards >>
WP Inorganic PT Standards >>
Phenova provides monthly microbioical PT studies for both Water Pollution and Water Supply. Our whole-volume standards save you time by eliminating a rehydration step.
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