Conversion
Alkalinity unit converter (dKH ↔ meq/L ↔ ppm CaCO₃)
Convert between the three alkalinity units hobbyists encounter: dKH (German hardness scale), meq/L (chemistry standard), and ppm as CaCO₃ (US drinking-water convention).
Formula
ppm CaCO₃ = dKH × 17.86
meq/L = dKH × 0.3566
dKH = ppm CaCO₃ × 0.056Quick reference
| dKH | ppm CaCO₃ |
|---|---|
| 6 | 107.16 |
| 7 | 125.02 |
| 8 | 142.88 |
| 9 | 160.74 |
| 10 | 178.6 |
| 11 | 196.46 |
| 12 | 214.32 |
| 14 | 250.04 |
Sources & references
- 01Randy Holmes-Farley — Alkalinityhttp://reefkeeping.com/issues/2002-02/rhf/feature/index.php
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