lsasdproc 100 r5 field ph measurement effective date july 23 2020 region 4 u s environmental protection agency laboratory services and applied science division athens georgia operating procedure title field ...
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...Lsasdproc r field ph measurement effective date july region u s environmental protection agency laboratory services and applied science division athens georgia operating procedure title id issuing authority lsasd branch chief review issue due purpose this document describes procedures methods considerations to be used observed when conducting measurements in aqueous phase media including groundwater surface water certain wastewaters scope application the contained are by personnel measuring of on occasion that determine any described section cannot obtain being sampled another method must said variant instrument or will documented logbook subsequent investigation report along with a description circumstances requiring its use mention trade names commercial products does not constitute endorsement recommendation for page uncontrolled printed table contents general information documentation verification precautions safety procedural quality control calibration grab sample overtopping cel...