Varify 7 in 1 Pool and Spa Test Strips- Easy to Use Water Testing Kit for Pool, Spa, Hot Tub & More - Tester Strip for Water Hardness, Chlorine, Bromine, pH, Alkalinity and Cyanuric Acid (100 Strips)

Good quick little test strips. If you don't want to Shell out the money for a liquid kit I would recommend these. Check the levels of few times and then actually took them to a store to see if it's correct and they were.

The information that is important for everyone’s purposes is the expiration date for this product. There were other brands that I considered purchasing but I chose not to because the recent reviews had shown that people were being shipped an expired product. Not this one!🥰 As you can see by the photo of the box, it has an expiration date of May 25th, 2025. That gives me a year and a half to use these strips which is perfect for my needs. It is also something to consider when choosing the quantity of strips that you will purchase. Will you be able to use all the strips in the time before they expire? A last thing to add about this is that the expiration date is on the box. It is not also on the container which is typical nowadays. So, before you throw away the box, it might be a good idea to write the expiration days on the container itself. Now I will write about my hydronic system needs so this part of my review may or may not be applicable to your needs. I have been having challenges keeping my hydroponic system in balance so that roots will grow on my cuttings. I finally found a person online that said to use spa test strips to gauge the correct amount of Free Chlorine. So, based on good reviews for some tests, not all tests, I chose these Varify ones. Some reviewers that gave this brand 1 or 2 stars said that the readings on cyanuric acid and calcium hardness are not accurate. So, if that is what you are looking for in a water test, then it might be good to look at the most recent reviews because there is a possibility that this was an issue with just one batch. They may have remedied the test to be more accurate now.However, for my purposes, this test kit is working well in ways that I didn’t even realize were something that Needed to be fixed. I had no idea that water hardness was an issue in my water! Also, my acidity is off the charts low! So, I will be using additives to adjust those things.For now, the difference between the before and after is simply adding bleach. The Free Chlorine reading should be between 2ppm and 4ppm in a hydroponic system. I was shocked to look at the reading (see Before photo attached) of the test before I added more bleach (in a hydroponic system you can add chlorine or bleach as a sanitizer to increase the amount of Free Chlorine). I had absolutely no sanitizer in my system as you can see by the clear swatch next to Free Chlorine. No wonder I was having a challenge getting my cuttings to grow roots!I did the test actually 3 times and adjusted after each time. You can see my final test in the After Photo I attached). You can see that the Free Chlorine reading is now a touch high for a hydroponic system but close enough to work. The test was easy to do, easy to read, and I have hope now of being successful with my hydroponic system. What a relief!

Ce produit est super pour le rapport qualité prix. À peine 2 secondes et j’obtiens un résultat très juste. Je sais ce que je dois apporter comme modification à mon eau pour rééquilibrer le PH ou le taux de chlore. Ce produit est fiable. J’utilise même ces bandelettes pour le spa à mon copain pour vérifier le taux de bromine et c’est parfait. Je le recommande autant pour la piscine que les spas.

Great product easy to read, and accurate!!Value for the money, need only one strip to get reading.

Bandelette étroite et longue pour une bonne prise mais la lecture avec la charte de couleurs est difficile à comprendre.