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#3
01-03-2017, 06:27 PM
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Makes sense. Just wondering why the Hanna says .221 ppm at the same time the Salifert has barely even a hint of blue in the range of 0.00-0.03 where it's should be showing a darker colour. I'm not a fan of the colour guessing game with Salifert but positive the shade is no darker than 0.03, let alone in the .1 - .25 range
I'll carry on using the ULR, I just thought the 2 were similar in accuracy 
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