Looking for something to keep your home pool water clean for as long as possible? The 290471 Pool Water Quality Test Strips will help you check the pH in your pool! packed in a convenient storage box 50 strips will ensure daily water monitoring ideal for measuring water pH in the range of 6.8 - 8.4 suitable for checking free chlorine levels in the range of 0 - 10.0 ppm necessary to control the alkalinity (alkalinity) of water from 0 - 240 ppm a necessary piece of equipment for every home pool owner PROPER CARE Proper pool water care ensures safety and hygiene. Maintaining clean water is crucial to ensuring your loved ones have maximum swimming pleasure. POOL CLEANLINESS UNDER CONTROL pH test strips – these strips will effectively help you monitor your pool water's pH and advise you on which product to use at a given time. They provide very fast measurements, which can be checked using the color-coded comparison scale included in the kit. CHEAP AND EFFECTIVE Compared to other water testing methods, test strips are relatively inexpensive, making them accessible to most people who use pools, spas, or aquariums. FAST RESULT Test strip results are available almost immediately after testing. There's no need to wait long for results, allowing you to quickly take corrective action if necessary. Using the 290471 POOL WATER QUALITY STRIPS is a quick, convenient and reliable way to take care of the water quality in various types of tanks, which translates into your comfort and safety when using swimming pools. Parameters: Set contents: 50 strips and a comparison scale Package dimensions: 3.5 x 3.5 x 9.6 cm Color: multicolor Brand: Avenli Packaging dimensions (blister): 9 x 4.5 x 17 cm (width x thickness x length) Note: We remind you to exercise caution when dosing chemicals. All information, including detailed instructions for use and dosage, can be found on the packaging. Avenli is a renowned brand of Jilong, which designs plastic products for tourism and water recreation. Its products hold numerous certifications, including ITS, TUV, and SGS.