Water Characteristics
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Conversion between different data
scales
| Temperature 1 °C = 33.8 °F 1 °F = -17.22 °C |
Volume 1 L = 0.26 gal 1 gal = 3.79 L |
| Size 1 cm = 0.39 in 1 in = 2.54 cm |
Hardness 1 dH = 17.86 ppm 1 ppm = 0.6 dH |
Water
Hardness
Hardness = the amount of dissolved salts in water
dH |
ppm or Mg/liter CaCO3 |
|
Soft |
0-3 |
0-50 |
Moderately soft |
3-6 |
50-100 |
Slightly hard |
6-12 |
100-200 |
Moderately hard |
12-18 |
200-300 |
Hard |
18-25 |
300-450 |
Very hard |
25+ |
450+ |
pH,
Hydrogen power
pH = the concentration of hydrogen ions in water
Acidic |
Neutral |
Alkaline |
+H |
-H |
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0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 |
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