WeAQUA DoubleCheck Water Hardness Test Kit 200 Strips with Sample Cup - Hard Water Testing Strips (0-25 gpg / 0-425 ppm)

These strips worked perfectly. Check out the first picture below. We are on a well with horribly hard water. But we have a water softener. The strips closest to the camera are the well water prior to running through the softener, the strip in the back is after running through the softener. The colors are easily readable - the pads in the front are brown, the water is VERY hard. The pads in the back are green, the water is very soft, so my softener is working. (Note - there are 2 color pads on each strip - those are just to ensure that the strips are functioning. No matter what color the pads turn, they must match on both color pads.) The price is super reasonable - $10. Also, the kit comes with 200 strips, which is probably going to be a lifetime supply for me...

I love these! We live out in the country with well water, so we have hard water and a water softener. We use these to tell if our water softener has re-generated or not. They work great, come in great packaging, and last a long time! Worth the money if you have well-water and a spotty water softener.

Easy to use.

I recently tried the DoubleCheck Water Hardness Test Kit 200 Strips, and it’s a reliable tool for monitoring hard water at home or in your aquarium. The test strips are easy to use—just dip, wait, and read the result quickly. They deliver accurate readings within one or two degrees of more professional kits, which is impressive for such a simple tool. What really stands out is the high strip count (200)—perfect for long-term use or frequent testing, and the color chart on the bottle makes it easy to interpret results. Plus, the compact packaging is ideal for storage. That said, the color matching isn’t flawless in low light, so I recommend testing under good lighting or comparing to a photo of the chart. Also, since the results are visual, subtle differences in water hardness can be hard to distinguish without a magnifier. Overall, I’m giving it 4 out of 5 stars—a dependable, cost-effective kit for anyone needing regular water hardness checks, with just a couple of minor usability quirks.

Packaging: Box arrived like it knew secrets. Inside: 200 strips, a sample cup, and the quiet promise of clarity. No wasted space, no confusing inserts—just the tools and a silent challenge: “Go ahead. Test everything.” Ease of Use: Dip. Wait. Compare. That’s it. No app, no calibration, no existential dread. The color chart is clear enough that even my skeptical cat could interpret it. I tested tap water, bottled water, rainwater, and one suspicious puddle. All judged. All catalogued. Accuracy: Ranges from 0–25 gpg and 0–425 ppm, which is basically the full emotional spectrum of water hardness. My kitchen tap scored a 0 ppm thanks to my water softener system. My rain barrel? A gentle 3. I now see my plumbing as well protected. Sample Cup: It’s small. It’s plastic. It’s perfect. I didn’t think I’d care, but it made the whole process feel official. Like I was conducting a ritual, not just dunking strips in water like a caffeinated raccoon. Visual Impact: Watching the strip change color is oddly satisfying. Like watching truth emerge from silence. I now test water before making tea, watering plants, or trusting a faucet. It’s become a lifestyle. Final Verdict: This kit doesn’t just test water—it reveals character. If you’ve ever suspected your tap water was plotting against your appliances, this is your moment. 200 strips means you can test with abandon, or ritualize each dip as part of a broader diagnostic lineage. Buy it. Dip it. Let the colors speak.

Dont be shocked. Says two hundred strips. When I opened the tube I thought there is no way there is two hundred. So, I took them out and counted. 50 test strips. Then I realized there were also three sealed envelopes in the box that ultimately contained 50 more each. They are a basic water hardness test strip and thats all the test, but easy to use. Nice having the sealed bags to keep the other strips moisture free from humidity or otherwise.

This works great. For checking hardness very easy to use. You know right away if your water is hard. Will buy them again.

Works well and gives a good reading however the package was missing sample cup

Fácil de usar. Sin embargo, la coloración de las tiras no se corresponde plenamente con la coloración del rango que aparece en el bote. En mi caso, la coloración es más verde que el mejor verde en el bote. No me quejo porque eso es bueno, pero no hay una correspondencia exacta entre la tira y los copies en el bote

It's expensive, but worth it. It won't give you an exact number but tells you the range of hardness in seconds. Very useful for monitoring your softner

Work very well Giving you a good indication of the softness/Hardness of your water Highly recommend

Easy to use. Readings make sense.

Easy and accurate