TM 5-6630-215-12Figure 2-21.W a t e r F i l t e r K it(e) Using the jar having the clearest water, slowly pour thewater from this jar into the filter funnel until funnel is full. Donot pour floc into filter funnel.(f) Squeeze the suction bulb to create a vacuum in the suctionflask.Seal end and release bulb.Water should flow into flask fromfunnel.Continue creating a vacuum until all the water in the funnelhas been filtered.(g) Pour this water into a clean beaker and refilter using anew filter paper and the vacuum process in step (f).(h) With care, water obtained by the above steps will have aturbidity of less than 0.5 units.(i) This filtered water is to be used in the turbidity testpara 2-22i or for a similar requirement.Pour this turpidity freewater into the plastic wash bottle containing the ION Exchange Resin(fig. C-1, WQAS-PM) for use in diluting samples, when required.k.Chlorine Demand and Coagulation Test Assembly (fig. 2-22).(1) Equipment.The test assembly consists of the followingitems located as indicated in the loading diagram (fig. 1-6).(a) Jars, 200 ml capacity, 4 ea. with frame.(b) Limestone, powdered 1-oz bottle.(c) Measuring spoon, 0.05 g.(d) Halazone (Chlorine demand reagent tablets) (100 tabletsper bottle).2-83
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