HagenKB

pH Testing of Hydroponics

Is the "A-7815 Nutrafin Test Kit - pH Wide Range" acceptable for testing the PH of hydroponic solutions?

Is the "A-7815 Nutrafin Test Kit - pH Wide Range" acceptable for testing the PH of hydroponic solutions?
We have not tested for the possibility of interference from some of the various nutrients used in the fertilization of the hydroponic solutions, so I really don't know whether you will get a fully accurate result when using the kits. You should compare the results against a known reading to be sure that the composition of your fluid does not contain any interference compounds that would skew the results in unknown ways. If you are using a lot of salts in your solution, you might find that the reading may be more accurate if you use the Salt water colour chart as the reference. In any case, as mentioned before, the kits results should be verified at the outset with a known result with a previously determined accurate tester, preferably a pH meter.

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