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Re: [APD] dropchecker setup
> > > I don't think most folks would consider 20-47ppm -- a range of 135% --
> > > accurate and rather "highly inaccurate"
> > ...but highly inaccurate is a lot better than nothing?
> > :)
> I guess it depends on how your eye sees the colour Green too?
...that, and the logarithmic pH/KH/co2 relationship can apparently be
overcome by using two dropcheckers. See Carlo's calculator output.
Another thought: overcome the issue of how your eye sees green by comparing
the dropchecker with actual known bromo blue solutions... make 5ml vials
with stable pH ref. solns. + bromo. blue... e.g. 6.0, 6.4, 6.6 and 6.8
> But ideally you could simply place a pH meter in the solution and read
> the value of the liquid. Then apply the formula.
> I'm surprised no one has made a meter that uses this method to simply
> supply a CO2 digital read out. Wouldn't be that difficult with a PIC chip.
...i'm thinking about engineering an inverted chamber that could be
conveniently removed from the tank and could have a pH probe immersed in
it's KH ref. soln. I think daily/N per week readings are sufficient because
we're measuring a closed, mostly stable system? Although, I do think
my "5ml beaker with eye drop lid dropcheck is pretty nifty.
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