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Your cart is empty. Why Is Testing Water Hardness Important?
You may have felt the effects of hard water, literally, the last time you washed your hands. Depending on the hardness of your water, after using soap to wash you may have felt like there was a film of residue left on your hands. When using hard water, more soap or detergent is needed to get things clean, be it your hands, hair, or your laundry. You can also notice some spots or film on glass dishes after unload them out of in the dishwasher. When hard water is heated, such as in a home water heater, solid deposits of calcium carbonate can form. This scale can reduce the life of equipment, raise the costs of heating the heating the water, lower the efficiency of electric water heaters, and clog pipes.
Measuring the Total Water Hardness with AQUAX Test Kit
The AQUAX has been designed in One-Reagent (Hardness Indicator Buffer Solution) for easy, quick and correct determination of water quality by Titrimetric Method. The easy drop-and-see application provides reliable results within few seconds.
TEST METHOD
Fill the test container with the water to analyzed, shake for two or three times and pour off. Fill 5 mL water sample to be analyzed.
Add 1 drop from hardness indicator Buffer Solution and shake the test container.
a) If the water sample color turns into green-bluish, no hardness is present. In this case, finalize the experiment and report it as Zero Hardness.
b) If the water sample contains any hardness, the color will turn into pink-reddish. If the color turns pink – reddish continue adding hardness indicator Buffer Solution drop by drop shaking after each drop and observing the color.
When the color turns into green-bluish finalizes the experiment.
RESULT: The number of drops spent during the experiment is recorded as amount of hardness in German unit (°dH).
1 drop = 1 German Hardness= 17.8 mg/L CaCO3
1 dH (German Hardness) = 1,04 GPG (Grains per Gallon)
Customer
Reviewed in the United States on February 6, 2025
I purchased this to keep track of the total hardness of the water in my hot tub as the test strips were always telling me that the water was very hard and I wanted a second way of ensuring what I had. I tested 3 different times using this test kit and one each test the water turned blue after 4 drops or regent - Soft Water. Too soft for my hot tub. I had a friend test it without my coaching to see if he got a different result, he got 3 drops - soft water. So I used it to test my tap water. In Tucson we have VERY hard water due to all of the copper and hard minerals in the ground water. It turned blue with 8 drops - not as soft, but still soft water. So I decided to try testing the water coming out of my RO system. Can you believe 5 drops of regent. The system is completely unreliable and inaccurate.
Kraig
Reviewed in the United States on January 19, 2025
Our county water is incredibly hard. I installed a water softener so I could stop replacing fixtures. To set it up properly, I had to know exactly how hard the water was, but the county doesn't publish that number, and won't give a straight answer when asked. I tried the strip test kits, but they are unreliable; no two strips give the same answer. The pro test kits are way more expensive than I could justify. Found this and decided to give it a try. Really glad I did. This turned out to be a great test kit at a very reasonable prideThe repeatability is great, every time I do a test, the result is the same. 18 grains untreated, 0 after the softener. I can't really comment on the absolute accuracy without paying for a commercial test to compare it with, but I used the results to set up the regen cycle on my softener, and it's working exactly as it should, so it must be close. Results were very easy to read, no ambiguity. There's enough testing solution for many tests, even at the high usage my water required.The only weird thing about it is it gives results in some German units called DH. Not an issue because DH is only 4% different than GPG, the standard US units. That's well within the accuracy of a dropper and vial test like this. Convert it (x 1.04), or pretend it's in GPG and call it good.
catcrazy
Reviewed in the United States on October 18, 2024
Little cup that was included was cracked. Fortunately, it didn't affect the amount of water we needed to put in it. We think this process worked just fine, once you figure out how to open the bottle - which was a bit of a problem. Hint to other buyers - cut off the funky ring at the bottom of the cap with a knife. And then there are the calculations to find out what the results are for USA water. All in all, we got the info our repairman needed.
Gary hempel
Reviewed in the United States on January 31, 2024
only complaint is that it uses German and French hardness units instead of Grains Per gallon. BUT if you know the conversions its not bad and it is an easy to use kit.
Howard Lynch
Reviewed in the United States on September 11, 2023
Testing water hardness for RO processing
brad
Reviewed in the United States on August 15, 2023
Bought this kit to test the performance of our water softener and to determine if our outdoor spigots provided soft or hard water. Obvious color change to signify hard/vs soft. I had previously tried test strips and they were useless.
Charles Fitzgerald
Reviewed in the United States on February 24, 2023
Tried the dip tabs, they didn’t work. This did a little better. Finally got my water softener guy to check the softness with his kit & the results were comparable.
David Miller
Reviewed in the United States on October 25, 2023
Here the US formula:1. Number of drops X 17.1= PPM2. PPM / 17.1= GPGExample: 13 Drops x 17.1= 222.3 ppm222.3 ppm / 17.1 = 13 gpg.Your water hardness is: 13 gpg
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