Re: [RML] Ross River blueeyes

Gary Lange (gwlange at stlnet.com)
Wed, 10 Jun 1998 23:11:19 -0500

snip If I have this right I think that most of the world is using either
Degrees hardness (german) or ppm (metric). What that really says is that all
you have to know is that 1 degree is equal to 17.9 ppm in the conversion, don't
you agree? It's been a very long time since I've seen any test kits using
clark or american degrees, going back to the days of the "soap" tests from the
late sixties. I have also seen the conversions used interchangeably between
both carbonate hardness=(KH) and general hardness=(GH) (Mg and Ca ions).

> Degrees DH (German) = 1 part Ca Oxide per 100,000 parts water = 17.9 ppm.
> Clarks degree = 1 grain Ca carbonate per imperial gallon.
> American degree = 1 grain Ca carbonate per 1,000,000 parts water.
> PPM = parts Ca. carbonate per million parts water.

> Adrian.
> ...............................................................
> Adrian R. Tappin
> "Home of the Rainbowfish"
> http://www.ecn.net.au/~atappin/home.htm
> ...............................................................
>