Hach 145300 Total Hardness Test Kit, Model 5-B

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Exactly what I needed. Tests for the most common hardness in my area. It doesn't test for iron, but there's kits available for that. We have very hard water ( 29.2 gr. per gallon with 0.2 clear water iron) and use this to check my softener's efficiency. Checked the reserve capacity settings of my new softener by letting it run down to zero available gallons, doing the laundry, dishwasher,showers,etc. and then checking the hardness before it regenerated. Still less than 1 grain per gallon after all that. Helps to know if you need to set your softener to high efficiency or high capacity. Saves me a lot of wasted salt and water from having the wrong settings. This is far and away the handiest kit I've seen. More accurate than the test strip kits. Instructions are straightforward. I've used titration equipment previously in a lab setting and this is very basic by comparison. But it works admirably for it's price. Our local water department has sophisticated water testing facilities and this inexpensive kit is spot on with their results. It won't check to the tenth of a grain, but who really needs that in a homeowner setting. There's enough material to do more tests than I'll ever use. Seems I have a lot of friends now that need their water checked.

Easy to use test kit. After a couple tries, you can carry out a test in probably under 2 minutes, maybe faster. I've done about 10 tests, and no really noticeable 'dent' in the remaining product amounts, so I'm guessing this kit is good for MANY tests (maybe 100+). I use it in my home to test how my water softener is doing (the softener is somewhat older, and I wasn't believing that the hardness was being effectively reduced, or at least that the softener was capable of processing/softening as many gallons as it should between recharges). This kit confirmed my suspicions. The color change (endpoint of test) is VERY easy to see (color change from pink to blue. The blue comes on fast (maybe there's about 1 drop during the drop-addition process where the color is more purple than blue). For home use, this is plenty accurate enough (in my case - hard water is 22-24 drops/grains) and I'm getting around 4 drops when 'soft'. Thus, the difference is easily noticeable with this kit, and if I test daily, I can see the softness 'decrease' (hardness increase) in the last day or 2 before a recharge is required. PS. shipped out and received product very quickly (in Canada) within about 3 days after order placement, and that wasn't an expedited shipment.

Couldn't have been happier. The hardness results were identical (both before & after softening) came out to be exactly same as done by the lab. Took less than a minute for each test. The step by step instructions were very easy to follow.

simple to use. fairly accurate - quite good enough to set up a softener. can sample again during year to see if supply water hardness changes which is much better than most hardness kits.

I hate the slimy soap residue left by soft water. I used this test kit to fine tune the amount of bypass on my water softener so I have a bit of hardness in my water to improve rinsing.I also used it to confirm which fixtures were plumbed for soft and which were plumbed for hard water.The contractor told me the kitchen sink and the refrigerator were plumbed with hard water for drinking water. With this kit I was able to determine he was right about the kitchen sink but the Refrigerator is plumbed with soft water.Highly recommend this kit.