This is an easy-to-use instrument to test the water quality of drinking water, aquarium, swimming pool and so on. It's multifunctional and can test PH/ EC/ TDS/ SALT/ S.G/ Temperature. Features: 6 in 1 Multifunction Tester: PH/ EC/ TDS/ SALT/ S.G/ Temperature, short press the "MODE" button for easy switching. Temperature unit switchable: ℃/ ℉. Rotate to remove the protective cap, immerse the electrode into the testing solution. Easy, accurate, fast and steady to use. Digital screen with backlight, greatly enhances reading experience, 3 LR44 batteries powered (not included), auto shutdown to save power. The instrument has memory function, if you power it on, it will enter the last test mode before shutdown. Water quality analyzer can be used to distinguish between drinking water and non-drinking water, and can test the water of aquarium, swimming pool, hydroponics, lab, etc. Compact and lightweight, easy storage and portability. Please clean the electrode with distilled water, and dry the electrode with filter paper. Note: Please read the user manual carefully before use. Specifications: Color: Grey & Green Material: ABS Range: PH: 0.00-14.00PH EC: 0-19990μs/cm, 0-199.0ms/cm TDS: 0-9990ppm, 0-199.0ppt SALT: 0-199.9ppt, 0-99.9% S.G: 1.000-1.400 Temperature: 0-50℃ (32-122℉) Resolution: PH: 0.01PH EC: 1μs/cm (＜1999μs/cm), 10μs/cm (＞1999μs/cm), 0.1ms/cm TDS: 1ppm (＜1999ppm), 10ppm (＞1999ppm), 0.1ppt SALT: 1ppm (＜1999ppm), 10ppm (＞1999ppm), 0.1ppt, 0.01% S.G: 0.001 Temperature: 0.1℃ (0.2℉) Power Supply: 3 * LR44 (Not included) Temperature Compensation: 0-50℃ Item Size: 180 * 45mm / 7.09 * 1.77in Item Weight (without battery): 104g / 3.66oz Package Size: 23.5 * 9.5 * 6cm / 9.25 * 3.74 * 2.36in Package Weight: 183g / 6.43oz Package List: 1 * Multifunction Water Tester 1 * User Manual (English)