TM 10-4320-303-13Figure 2-53. pH Indicator.d. Refer to paragraph 2.5.5.7 and perform steps k through m, replacing "chlorine color disc" with "ph colordisc".e. In making the pH test be careful to avoid touching the sample or indicator cell (Figure 2-50, 4) with thedropper (Figure 2-52, 1). Never place the dropper on a laboratory bench or other surface because theadherence of the slightest amount of acid or alkali to it will produce incorrect results.f. Refer to paragraph 2.5.5.7 and perform steps o through s.2-87
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