Re: KH,pH,CO2 table
> From: "Matthew Paul Rhoten" <mrhoten at surly_org>
> Date: Wed, 18 Dec 1996 18:55:55 -0800
> Subject: re: KH, pH, CO2 table ...
> > pH as a function of CO2 concentration and KH value:
> > 7.58+@LOG(KH)-@LOG(CO2)
> > CO2 concentraction at a given pH and KH
> > 10^(7.58-pH+@LOG(KH))
What is the standard unit for KH?
A note under the Optimum CO2 Content Table in Dupla brochure says :
'' carbonate hardness in German degrees ( 1 degree dKH~ 10 ppm)''
However I had read from other references that say 1 German Degree equals
17.9 ppm .
Which is which?