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Examen
AWWA Lab Analyst 1 Exam with Questions and Answers
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AWWA Lab Analyst
AWWA Lab Analyst
AWWA Lab Analyst 1 Exam with Questions and Answers Reagent to raise calcium sample pH ANSWER raise to >12 Sodium Hydroxide Calcium Hardness indicator solution ANSWER Murexide or eriochrome blue black R Calcium Hardness color change ANSWER Pink to purple Total hardness pH adjustment ANSWER First preserve with Nitric acid or H2SO4 to <2.0 then raise pH with Ammonium hydroxide to >10 Total Hardness Indicator Solution ANSWER Eriochrome Black T or Calmagite Total Hardn...
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