- Versatile pH Meter: Improve your quality of life with this essential digital pH tester. Ideal for testing drinking water, monitoring swimming pool quality, measuring pH balance in RO/DI systems, aquariums, spas, hot tubs, wine brewing, and hydroponics. - Three Display Modes for Salinity Testing: Easily switch between PPM, PPT, and percentage readings. For swimming pool salt tests, measure 0-9999 ppm; for seawater, 10-200 ppt (1 ppt = 1000 ppm). Food tests can be conducted from 0.01% to 25%. This eliminates complex calculations, making it user-friendly. - User-Friendly Operation: Simply turn on the meter and press the MODE button to access the salinity function. This straightforward design provides a premium user experience and is perfect for various applications, including Koi fish, seawater, and aquarium monitoring. - Accurate TDS Meter: Equipped with a high-quality titanium alloy probe, this digital pool water tester delivers quick and precise readings across a wide range of 0-9999 ppm and 0-200 ppt. - Multifunctional Water Testing: This meter combines five essential functions—Salinity, TDS, EC, pH, and Temperature—into one device. This versatility saves time and money while addressing all your water quality testing needs. - Tips for Optimal Performance: If the display is unclear, replace the battery. For operational issues, reset to factory settings by pressing and holding the power button for 8 seconds. Use the included calibration powder for precise pH measurements after a reset. - Included in the Package: 1 TDS/EC/pH/temp/salt meter, pH buffer powders (3 each of pH 4.01, 6.86, and 9.18). Note that salinity calibration requires a separate reagent, not included. - Battery Information: Batteries come with a protective diaphragm that must be removed before use. - Calibration Reminder: Generally, EC/TDS/SALT calibration is not required; restoring factory settings is usually sufficient. For high-accuracy needs, manual calibration is recommended. To restore factory settings, press and hold the power button for 8 seconds.