http://kb.marinedepot.com/article.aspx?id=10833
+300 ppm variance on his exact kit
an easier test is to just post two side by side alt test kit readings of his water sample and at least work off a short avg. his reading might be verified as correct, just showing how skews come up. my only goal in providing alternates is to prevent too-quick reactions, better to hesitate when param detailing with no known tank impacts that's all. a rolling 300 variance might mean the other batch is low.
To know if his kit was used successfully, we'd need a comparison of two or more. if every reading taken is a few hundred ppm too high it seemed we might be eyeballing
+300 ppm variance on his exact kit
an easier test is to just post two side by side alt test kit readings of his water sample and at least work off a short avg. his reading might be verified as correct, just showing how skews come up. my only goal in providing alternates is to prevent too-quick reactions, better to hesitate when param detailing with no known tank impacts that's all. a rolling 300 variance might mean the other batch is low.
To know if his kit was used successfully, we'd need a comparison of two or more. if every reading taken is a few hundred ppm too high it seemed we might be eyeballing
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