Use the 10ml sample line. That way, you add the DPD, then count the drops of FAS solution till it turns clear. (Swirl after each drop!) Multiply the drop count x 0.5 and that's your ppm reading.
Post your test results, once you have them.
Re: Chlorine level is low
Use the 10ml sample line. That way, you add the DPD, then count the drops of FAS solution till it turns clear. (Swirl after each drop!) Multiply the drop count x 0.5 and that's your ppm reading.
Post your test results, once you have them.
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