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FAQ on test kit conversions
> From: "David W. Webb" <dwebb at ti_com>
> Ah! I should've kept reading before responding. I submit that a
> conversion table indicating that 1 dH KH is approximately 17.9 or so ppm
> CO3-- equivalent in alkalinity and don't presume to tell people which they
> should use.
I quote, from the "Conversions" FAQ
1 degree hardness (GH) = 17.8 ppm CaCO3
1 degree "carbonate hardness*" (KH) = 17.8 ppm CaCO3
1 meq/L alkalinity = 2.8 degrees KH
1 ppm = 1 mg/L
Nitrate-NO3 = 4.4 * Nitrate-N Nitrite-NO2 = 3.3 * Nitrite-N
Ammonia-NH3 = 1.1 * Ammonia-N
* Note that the term ``carbonate hardness'' is bit of a misnomer, and
most amateur chemists would prefer we use the more appropriate term
``Alkalinity''. See the BEGINNER CHEMISTRY section for more details.
I suppose I could also put a paragraph addressing this in the plant Q&A
section when the smoke clears on this discussion, IF it can be done in a
simple and understandable way.
- Erik (Mr. FAQ),
who just found out this week that you guys download 600,000 pages,
or 5 gigabytes a month off the Caltech site. Yipe!
eriko at wrq.com