TM 5-6630-215-12
Figure 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 the
water from this jar into the filter funnel until funnel is full. Do
not pour floc into filter funnel.
(f) Squeeze the suction bulb to create a vacuum in the suction
flask.
Seal end and release bulb.
Water should flow into flask from
funnel.
Continue creating a vacuum until all the water in the funnel
has been filtered.
(g) Pour this water into a clean beaker and refilter using a
new filter paper and the vacuum process in step (f).
(h) With care, water obtained by the above steps will have a
turbidity of less than 0.5 units.
(i) This filtered water is to be used in the turbidity test
para 2-22i or for a similar requirement.
Pour this turpidity free
water 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 following
items 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 tablets
per bottle).
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