Quote:
Originally Posted by ant123mon
I don’t trust the Hannah phosphate tester. Different reading every test. I have both high range and low range checkers high range says 1.5 with accuracy +-1 seems pretty high window of error. Low range test zero +-.04 I gave up on them and ordered a Milwaukee. Granted perhaps I’m testing wrong but don’t believe so. I have read else where these aren’t accurate
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They are very accurate. I have been using them for a long time and I was able to cross-match the results with ICP/triton analysis within few units of ppb. You are probably doing something wrong.