pH Meter Calibration Solution Kit,Includes pH 4.00, 7.00 and pH Electrode Protection Solution Pool Salt Tester pH Meter New Update Digital pH Tester Salinity Meter High Accuracy pH Buffer Calibration Solution Kit: Reports values with precision of +/- 0.01 pH at 25°C. You can use GIDIGI pH meter for a longer period of time and obtain accurate ph buffer calibration solution. Specialized pH Solution: We recommend that you regularly calibrate your pH meter to ensure that it is more accurate and better, helping you check the quality of hydroponic nutrient solutions, household water, and drinking water. Stable Ingredients pH Solution: Does not easily evaporate after opening, ensuring accurate readings.Unopened bottles have a shelf life of 3 years from the date of production. 【GIDIGI New Update 5 in 1 Digital Pool Water Tester】GIDIGI Pool Salt Tester pH Meter is a newly upgraded 5 in 1 digital water tester designed specifically for pool owners. With a large LCD backlit screen display, you can easily view the pH and salinity, pH and EC, pH and TDS values simultaneously. Unlike traditional pH meters, the advanced device eliminates the need to switch modes and press buttons, saving you time and effort. Even if you're a beginner, operating the salinity meter is a breeze. 【Adjust pH Salt Water Pool with GIDIGI Salt pH Meter】The GIDIGI easy to use pH tester takes the guesswork out of pool maintenance, providing accurate readings at a glance. Simply dip the probe into the water and get the pH and Salt Value. Ideal for saltwater pools and salt chlorine generators, it helps you achieve the optimal range of 2700-3500 ppm. The ideal range for pool water pH is 7.2-7.8.Ensuring crystal clear water. Compact and portable, this pH Tester is a must-have for any pool owner.