[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [APD] CO2 drop checker
Vaughn Hopkins wrote:
> The problem is that measuring the pH and KH of the tank water doesn't
> tell you how much CO2 is in the tank water. That water almost always
> contains some other sources of alkalinity and acidity besides CO2, so
> the equation relating pH/KH/CO2 isn't applicable. The "drop checker"
> lets us get around that problem by using distilled water with just
> sodium bicarbonate in it as a test solution. I have no idea how
> well the Phenol Red would work in this device, or how easy it is to
> discriminate between orange and yellow orange or reddish orange.
> But, trying it out wouldn't be terribly expensive. I suspect that
> the "high range" pH test kits may use Phenol Red and would be a good
> thing to experiment with too.
What might be *really* interesting to those of us who appreciate
precision for precision's sake is figuring out a way to get a pH probe
into that distilled water.
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com