ca-nv-awwa-water-quality-laboratory-analysts-grade-3 Practice Test

1Multiple ChoiceSelect all that apply

When preparing a calibration curve for spectrophotometric determination of manganese by the PAN method, which of the following must be included in each analytical run? (Choose two.)

A.A reagent blank carried through the entire preparation procedure
B.A check standard at a concentration near the upper end of the calibration range
C.A duplicate of every field sample at the same dilution
D.A calibration blank (zero standard) and at least one mid-range check standard

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