LANGELIER INDEX CHART VALUES
| Total dissolved solids (ppm) |
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| 50 |
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| .07 |
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| (PPM) |
| 75 |
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| .08 |
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| 100 |
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| .10 |
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| SOLIDS |
| 150 |
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| .11 |
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| 200 |
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| .13 |
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| 300 |
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| .14 |
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| TOTAL |
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| 400 |
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| .16 |
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| 600 |
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| .18 |
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| 800 |
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| .19 |
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| 1000 |
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| .20 |
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| Hardness (ppm) |
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| UNITS |
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| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |
| 0 |
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| 0.08 | 0.20 | 0.30 | 0.38 | 0.43 | 0.51 | 0.56 | ||
| 10 |
| 0.60 | 0.64 | 0.68 | 0.72 | 0.73 | 0.78 | 0.81 | 0.83 | 0.86 | 0.88 | |
| 20 |
| 0.90 | 0.92 | 0.94 | 0.96 | 0.98 | 1.00 | 1.02 | 1.03 | 1.05 | 1.06 | |
| 30 |
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| 1.08 | 1.09 | 1.11 | 1.12 | 1.13 | 1.15 | 1.16 | 1.17 | 1.18 | 1.19 | ||
| 40 |
| 1.20 | 1.21 | 1.23 | 1.24 | 1.25 | 1.26 | 1.26 | 1.27 | 1.28 | 1.29 | |
| 50 |
| 1.30 | 1.31 | 1.32 | 1.33 | 1.34 | 1.34 | 1.35 | 1.36 | 1.37 | 1.37 | |
| 60 |
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| 1.38 | 1.39 | 1.39 | 1.40 | 1.41 | 1.42 | 1.42 | 1.43 | 1.43 | 1.44 | ||
| 70 |
| 1.45 | 1.45 | 1.46 | 1.47 | 1.47 | 1.48 | 1.48 | 1.49 | 1.49 | 1.50 | |
| 80 |
| 1.51 | 1.51 | 1.52 | 1.52 | 1.53 | 1.53 | 1.54 | 1.54 | 1.55 | 1.55 | |
TENS | 90 |
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| 1.56 | 1.56 | 1.57 | 1.57 | 1.58 | 1.58 | 1.58 | 1.59 | 1.59 | 1.60 | |||
100 |
| 1.60 | 1.61 | 1.61 | 1.61 | 1.62 | 1.62 | 1.63 | 1.63 | 1.64 | 1.64 | ||
| 110 |
| 1.64 | 1.65 | 1.65 | 1.66 | 1.66 | 1.66 | 1.67 | 1.67 | 1.67 | 1.68 | |
| 120 |
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| 1.68 | 1.68 | 1.69 | 1.69 | 1.70 | 1.70 | 1.70 | 1.71 | 1.71 | 1.71 | ||
| 130 |
| 1.72 | 1.72 | 1.72 | 1.73 | 1.73 | 1.73 | 1.74 | 1.74 | 1.74 | 1.75 | |
| 140 |
| 1.75 | 1.75 | 1.75 | 1.76 | 1.76 | 1.76 | 1.77 | 1.77 | 1.77 | 1.78 | |
| 150 |
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| 1.78 | 1.78 | 1.78 | 1.79 | 1.79 | 1.79 | 1.80 | 1.80 | 1.80 | 1.80 | ||
| 160 |
| 1.81 | 1.81 | 1.81 | 1.81 | 1.82 | 1.82 | 1.82 | 1.82 | 1.83 | 1.83 | |
| 170 |
| 1.83 | 1.84 | 1.84 | 1.84 | 1.84 | 1.85 | 1.85 | 1.85 | 1.85 | 1.85 | |
| 180 |
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| 1.86 | 1.86 | 1.86 | 1.86 | 1.87 | 1.87 | 1.87 | 1.87 | 1.88 | 1.88 | ||
| 190 |
| 1.88 | 1.88 | 1.89 | 1.89 | 1.89 | 1.89 | 1.89 | 1.90 | 1.90 | 1.90 | |
| 200 |
| 1.90 | 1.91 | 1.91 | 1.91 | 1.91 | 1.91 | 1.92 | 1.92 | 1.92 | 1.92 | |
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| TENS |
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| 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | |
| 200 |
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| 1.92 | 1.94 | 1.96 | 1.98 | 2.00 | 2.02 | 2.03 | 2.03 | 2.06 | ||
HUNDREDS | 300 |
| 2.08 | 2.09 | 2.11 | 2.12 | 2.13 | 2.13 | 2.16 | 2.17 | 2.18 | 2.19 | |
400 |
| 2.20 | 2.21 | 2.23 | 2.24 | 2.23 | 2.26 | 2.26 | 2.27 | 2.28 | 2.29 | ||
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| 500 |
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| 2.30 | 2.31 | 2.32 | 2.33 | 2.34 | 2.34 | 2.35 | 2.36 | 2.37 | 2.37 | ||
| 600 |
| 2.38 | 2.39 | 2.39 | 2.40 | 2.41 | 2.42 | 2.42 | 2.43 | 2.43 | 2.44 | |
| 700 |
| 2.45 | 2.45 | 2.46 | 2.47 | 2.47 | 2.48 | 2.48 | 2.49 | 2.49 | 2.50 | |
| 800 |
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| 2.51 | 2.51 | 2.52 | 2.52 | 2.53 | 2.53 | 2.54 | 2.54 | 2.55 | 2.55 | ||
| 900 |
| 2.56 | 2.56 | 2.57 | 2.57 | 2.58 | 2.58 | 2.58 | 2.59 | 2.60 | 2.60 | |
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Temperature (°F)
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| UNITS |
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| 0 | 2 | 4 | 6 | 8 | |
| 30 |
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| 2.60 | 2.67 | 2.54 | 2.81 | ||
| 40 | 2.48 | 2.45 | 2.43 | 2.40 | 2.37 | |
| 50 | 2.34 | 2.31 | 2.28 | 2.25 | 2.22 | |
| 60 |
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| 2.20 | 2.17 | 2.14 | 2.11 | 2.09 | ||
| 70 | 2.06 | 2.04 | 2.03 | 2.00 | 1.97 | |
| 80 | 1.95 | 1.92 | 1.90 | 1.88 | 1.86 | |
TENS | 90 |
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1.84 | 1.82 | 1.80 | 1.78 | 1.76 | |||
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| 100 | 1.74 | 1.72 | 1.71 | 1.09 | 1.67 | |
| 110 | 1.05 | 1.64 | 1.62 | 1.60 | 1.58 | |
| 120 |
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| 1.67 | 1.63 | 1.53 | 1.51 | 1.50 | ||
| 130 | 1.48 | 1.46 | 1.44 | 1.43 | 1.41 | |
| 140 | 1.40 | 1.38 | 1.37 | 1.35 | 1.34 | |
| 150 |
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| 1.32 | 1.31 | 1.29 | 1.28 | 1.27 | ||
| 160 | 1.26 | 1.24 | 1.23 | 1.22 | 1.21 | |
| 170 | 1.19 | 1.18 | 1.17 | 1.10 |
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Alkalinity (ppm)
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| UNITS |
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| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |
| 0 |
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| 0.00 | 0.30 | 0.48 | 0.60 | 0.70 | 0.78 | 0.85 | 0.90 | 0.93 | ||
| 10 | 1.00 | 1.04 | 1.08 | 1.11 | 1.15 | 1.18 | 1.20 | 1.23 | 1.26 | 1.29 | |
| 20 | 1.30 | 1.32 | 1.34 | 1.36 | 1.38 | 1.40 | 1.42 | 1.43 | 1.45 | 1.46 | |
| 30 |
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| 1.48 | 1.49 | 1.51 | 1.52 | 1.53 | 1.54 | 1.56 | 1.67 | 1.58 | 1.59 | ||
| 40 | 1.60 | 1.61 | 1.62 | 1.63 | 1.64 | 1.65 | 1.66 | 1.67 | 1.68 | 1.69 | |
| 50 | 1.70 | 1.71 | 1.72 | 1.72 | 1.73 | 1.74 | 1.75 | 1.76 | 1.76 | 1.77 | |
| 60 |
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| 1.78 | 1.79 | 1.79 | 1.80 | 1.81 | 1.81 | 1.82 | 1.83 | 1.83 | 1.84 | ||
| 70 | 1.85 | 1.85 | 1.86 | 1.86 | 1.87 | 1.88 | 1.88 | 1.89 | 1.89 | 1.90 | |
| 80 | 1.90 | 1.91 | 1.91 | 1.92 | 1.92 | 1.93 | 1.93 | 1.94 | 1.94 | 1.95 | |
TENS | 90 |
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1.95 | 1.96 | 1.96 | 1.97 | 1.97 | 1.98 | 1.98 | 1.99 | 1.99 | 2.00 | |||
100 | 2.00 | 2.00 | 2.01 | 2.01 | 2.02 | 2.02 | 2.03 | 2.03 | 2.03 | 2.04 | ||
| 110 | 2.04 | 2.05 | 2.05 | 2.05 | 2.06 | 2.06 | 2.06 | 2.07 | 2.07 | 2.08 | |
| 120 |
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| 2.08 | 2.08 | 2.09 | 2.09 | 2.09 | 2.10 | 2.10 | 2.10 | 2.11 | 2 11 | ||
| 130 | 2.11 | 2.12 | 2.12 | 2.12 | 2.13 | 2.13 | 2.13 | 2.14 | 2.14 | 2.14 | |
| 140 | 2.15 | 2.15 | 2.15 | 2.16 | 2.16 | 2.16 | 2.16 | 2.17 | 2.17 | 2.17 | |
| 150 |
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| 2.18 | 2.18 | 2.18 | 2.18 | 2.19 | 2.19 | 2.19 | 2.20 | 2.20 | 2.20 | ||
| 160 | 2.20 | 2.21 | 2.21 | 2.21 | 2.21 | 2.22 | 2.22 | 2.23 | 2.23 | 2.23 | |
| 170 | 2.23 | 2.23 | 2.23 | 2.24 | 2.24 | 2.24 | 2.24 | 2.25 | 2.25 | 2.25 | |
| 180 |
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| 2.26 | 2.26 | 2.26 | 2.26 | 2.26 | 2.27 | 2.27 | 2.27 | 2.27 | 2.28 | ||
| 190 | 2.28 | 2.28 | 2.28 | 2.29 | 2.29 | 2.29 | 2.29 | 2.29 | 2.30 | 2.30 | |
| 200 | 2.30 | 2.30 | 2.30 | 2.31 | 2.31 | 2.31 | 2.31 | 2.32 | 2.32 | 2.32 | |
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| TENS |
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| 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | |
| 200 |
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| 2.32 | 2.34 | 2.36 | 2.38 | 2.40 | 2.42 | 2.43 | 2.43 | 2.46 | ||
HUNDREDS | 300 | 2.48 | 2.49 | 2.51 | 2.52 | 2.53 | 2.54 | 2.56 | 2.57 | 2.58 | 2.59 | |
400 | 2.60 | 2.61 | 2.62 | 2.63 | 2.64 | 2.65 | 2.66 | 2.67 | 2.68 | 2.69 | ||
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| 500 |
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| 2.70 | 2.71 | 2.72 | 2.72 | 2.73 | 2.74 | 2.75 | 2.76 | 2.76 | 2.77 | ||
| 600 | 2.78 | 2.79 | 2.79 | 2.80 | 2.81 | 2.81 | 2.82 | 2.83 | 2.83 | 2.84 | |
| 700 | 2.85 | 2.85 | 2.86 | 2.86 | 2.87 | 2.88 | 2.88 | 2.89 | 2.89 | 2.90 | |
| 800 |
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| 2.90 | 2.91 | 2.91 | 2.92 | 2.92 | 2.93 | 2.93 | 2.94 | 2.94 | 2.95 | ||
| 900 | 2.95 | 2.96 | 2.96 | 2.97 | 2.97 | 2.98 | 2.98 | 2.99 | 2.99 | 3.00 | |
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87