S A T U R A T I O N I N D E X
Test the water for pH, Alkalinity, Calcium Hardness, and Temperature, then follow the simple steps below:
1. | Write your pool’s pH level here: |
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| pH: ________ | ||||||||||||||
2. | Find your Alkalinity level in the chart below, and write the |
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corresponding Alkalinity Factor here: |
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| Alkalinity Factor: ________ | |||||||||||||||||||
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| Pool Alkalinity |
| 5 |
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| 25 |
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| 50 |
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| 75 |
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| 100 |
| 150 | 200 | 300 | 400 |
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| Factor |
| 0.7 |
| 1.4 |
| 1.7 |
| 1.9 |
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| 2.0 |
| 2.2 | 2.3 | 2.5 | 2.6 |
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3. | Find your Calcium level in the chart below, and write the |
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corresponding Calcium Factor here: |
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| Calcium Factor: ________ | ||||||||||||||||||
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| Pool Calcium |
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| 5 |
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| 25 |
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| 50 |
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| 75 |
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| 100 |
| 150 |
| 200 |
| 300 |
| 400 |
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| (CaCO3) |
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| Factor |
| 0.3 |
| 1.0 |
| 1.3 |
| 1.5 |
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| 1.6 |
| 1.8 |
| 1.9 |
| 2.1 |
| 2.2 |
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4. | Find your pool temperature in the chart below, and write the |
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corresponding Temperature Factor here: |
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| Temperature Factor: ________ | |||||||||||||||||||||||||
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| Pool Temp |
| 32 |
| 37 |
| 46 |
| 53 |
| 60 |
| 66 |
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| 76 |
| 84 |
| 94 |
| 105 |
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| Factor |
| 0.0 |
| 0.1 |
| 0.2 |
| 0.3 |
| 0.4 |
| 0.5 |
| 0.6 |
| 0.7 |
| 0.8 |
| 0.9 |
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5. Add the results from steps 1 through 4 above and write the result here: | Total of above: ________ |
6. Subtract 12.2 from step 5 and write the result here: | Saturation Index = |
- 12.2
____
If the Saturation Index above is between
If the Index is more than 0.3, the water will tend to cause scaling or get cloudy. Alkalinity and pH should be reduced accordingly, but maintained within recommended levels.
If the Index is less than
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