HSC 252 - Water Quality and Treatment - My Illinois State
a. Subtract free chlorine concentration from total chlorine concentration in mg/l. 4. DPD method, using Taylor liquid DPD chlorine reagents. a. Fill Taylor sample tube to mark with water to be tested. b. Add 5 drops liquid DPD reagent #1, mix by stirring with stir rod. c. Add 5 … ................
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