Health Metric Green Digital pH Meter / Tester Full Kit - Suitable For Water, Food, Aquarium, Pool & Hydroponics QUICK AND EASY MEASUREMENT - Paper strips and other chemicals to pH test are extremely time consuming and not accurate. Our device is a digital pH tester ( measure range 0.00-14.00 ) which will allow you to test your water quickly and accurately within 0.01 pH - no matter what your liquid is or whether you are a new or experienced user. The backlight makes incredibly easy using it even in the dark! AUTOMATIC CALIBRATION - Product takes time to properly calibrate. Read description for details! IDEAL FOR ANY HOUSEHOLD: You can use it to measure your aquarium, pool, bath tub and to test the levels of acidity and alkalinity in your drinking water, RO System, spa, soap mixtures, food, wine, beer or any other liquid. A FULL KIT - We make the complex simple - based on feedback and questions of thousands of customers we have added 6 extra calibration powders, a pH meter Maintenance & FAQ guide (sent as PDF) and a pH ebook (with NINJA pH Tips, Charts and Techniques from experts) to make every situation and measurement a breeze. DEDICATED SUPPORT AND TEAM - Whether a question about maintenance, calibration or water testing were a team of water quality enthusiasts here for You! We care about every single one of our customers and want to make sure You get the best. Thus, why we work tirelessly on constantly improving our meters, customer service and added extras