A lot of readers have asked me where to purchase the test kit I used to check the hardness of the water in my house. I use a test kit from Hach Company. Here is a link to the Hach Company.

The kit is a drop count titration kit. The economical drop count procedures provide a low-cost method for titrimetric determinations. To calculate concentration, simply add an indicator to the measured water sample, then use the dropper to add titrant until the color changes. I use a 5B Hardness kit which is listed on their website. There is an 800 number listed there as well so you can call to order and check prices.

Message me at BobHewitt@Misterfixit.com

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