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which method or test kit i should use to measure po4 for freshly mixed salt?
i used hi736 to measure the po4 fm salt and made sure that it is fully dissolve . it is reading at 25 ppb
did i do something wrong ?
the tds of the RODI is 0 and 0 on the hi736
i used hi736 to measure the po4 fm salt and made sure that it is fully dissolve . it is reading at 25 ppb
did i do something wrong ?
the tds of the RODI is 0 and 0 on the hi736