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#1
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![]() The refractometer is for salinity. Try it and see what it says then compare to you RO, if the numbers are the same, then I would say either is fine for calibrating it. If you get different numbers then just use your ro.
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#2
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![]() It should be able to test for both salinity & specific gravity.
I believe that the proper water temp should also be part of the equation for calibrating. Please correct me if I am wrong.
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![]() Greg |