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IAPMO PS 080-2019
Clarifiers
IAPMO PS 80-2019 covers clarifiers intended for separating liquids and or solids that have different specific gravities than water and specifies requirements for materials, physical characteristics, performance testing, and markings. It is recommended that a sample box be located at the outlet end of all grease interceptors so that the administrative authority can periodically sample effluent quality.
International Association of Plumbing and Mechanical Officials [iapmo]
