#31
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If you have access to one, might be nice to test with one of the PO4 hanna's as well. The other thing I would find is that my ULR kit, when converted to ppm, seemed incapable of returning a result much below 0.08, while the regular kit would return 0.00.
If both the regular range and ULR kits agree that your PO4 is in the 0.09 to 0.12 range, then your method probably worked and you can have a higher degree of confidence in your results. |
#32
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The lowest reading I've gotten with mine is 0.02 but I've often got 0.04.
And thx Adam when can I expect your order? Kids are wondering how many more units they have to build tonight before I give them water and rest. |
#33
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I also use the ULR checker but I don't use it for accurate numbers, only trends.
I use a target of 10ppb though to adjust my Foz Down dosing. I also take the appearance of the tank to tell me what's what.
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Mitch |