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Unread 01/27/2018, 10:57 AM   #17
josephxsxn
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Join Date: Oct 2017
Location: DTW, Michigan
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Can you please share the model number of the colorimeter your using? The 713 has a range of 0 - 2.5ppm,. So are you using a 713 and mean your phosphates are at 0.58 ppm?


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