Kit contains 20 tablets. Only one tablet is needed for a yes/no softness indication (red not soft, blue soft) so you can test 20 times. Perfect for adjusting “number of days” on a timer softener or fine tuning a metered softener, just test every evening for a couple of weeks.
However not so good to use to measure the actual hardness as you may need to use eight or more tablets before the colour turns blue – you then look at the table for ppm v number of tablets so you may only get one or two tests from the kit.
Test strips would be better to measure the hardness as only one strip is used (it changes colour depending on hardness 0 – 500 ppm)."
"These tablets a terrific for showing the hardness of the water in parts per million. Once the softner is working ...they can be used to fine tune the salt delivery, or just confirm that it is working properly. Good value as well"
"I suspected my domestic water softener wasn't working so I ordered this kit to check. Just fill the testing bottle with water, drop in tablets one at a time until you see a dramatic and obvious colour change. The number of tablets used determines water hardness. Very effective and cheap."
"So simple to use. Measure the correct quantity of mains water, add tablets one at a time until the colour changes.
The colour change is strong, so there's no doubt about the change point. With my water, it took 7 tablets: the chart says my water hardness is 270 ppm. On the Water Suppliers site, it says the average water hardness in my area is 278, so the result seems accurate.
The remaining tablets can be used as a quick test to see if your softener is working. Just drop one tablet into a cup of water and if the softener is working, the tablet will turn instantly. (You can compare this against the same test using mains water.)"
"This kit contains all that you need to check the hardness of your mains water in ppm in order to set up your water softener. Tablets are much easier to use than a kit that uses 'number of drops'. If you have very hard water then the kit only has sufficient tablets to to test the water once but there are usually enough tablets left to check that the water coming out of the softener is soft."
"Seems very handy to check on your water softener operation. I have used this product to check our softener for some time. Simple to use Soft water is Blue. Red is hard. Fill bottle to marked line and insert tablet. result is instant."
"I used this to check my water softener was working properly. Bascially you keep adding the tablets until the water turns blue and then you know how hard your water is by how many tablets you've used. If you need to retest your water, you may have enough tablets, but I've found a more economical solution. You can buy water test strips in packs of 50 for about a tenner (i.e. 20 pence per test). Try searching online for hardness test strips. Hope this was useful to you."