Total Hardness Test
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Total Hardness Test. 1. Label five beakers with their respective names. 2. Put 10 mL of sample in their respective beakers. 3. Dip one test strip in sample beaker for 3 seconds.

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1. Label five beakers with their respective names. 2. Put 10 mL of sample in their respective beakers.



4. Remove and immediately match to the closest 10 colour on the colour chart that is located on the test strip packet. Colour is only stable for 1 minute. 5. Read results as mg/L (parts per million), match with the best colour to determine the Total Hardness concentration. 6. Repeat steps 3 through 5 with the other water samples. Results: The Saskatchewan Guideline Limit Sample (SGLS) for Total Hardness should give a result very close to the 800 mg/L guideline; this is a very high level of hardness and should only be encountered in untreated well water sources.


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