Specification Brand : Yewhick BulletPoint1 : 4-in-1 Hydrogen Water Tester: Yewhick hydrogen tester can simultaneously measure pH, ORP, H2, and temperature, with a large and wide measurement range, providing comprehensive water quality information. Very suitable for measuring drinking water, swimming pools, ponds, beer brewing, kombucha, aquariums, hydroponics, laboratories, and food processing BulletPoint2 : Accurate Hydrogen Water ppb/ppm Modes: The Yewhick hydrogen water test pen features two test modes (ppb/ppm), catering to different user preferences. Whether accustomed to ppb or ppm mode, this tester adapts easily with a short press of the MODE/CAL button. It utilizes an upgraded version of the electrode polymer reference for swift and precise readings BulletPoint3 : 3 Point Calibration: Featuring a high-sensitivity glass probe, the pH meter offers a complete measurement range from 0 to 14 pH with a remarkable 0.01 pH resolution. To ensure accuracy, our pH meter undergoes meticulous three-point calibration using pH solutions at 4.00, 6.86, and 9.18. Our ORP and H2 meters come pre-calibrated for convenience BulletPoint4 : Professional Hydrogen Water Tester for Hydrogen Water Bottles: Long-term consumption of hydrogen-rich water can boost metabolism, relieve muscle aches and pains, improve sleep, and bring health benefits to your loved ones. Yewhick hydrogen tester has a range of 0-2400ppb/0.001-2.400ppm, which can help you quickly get the concentration of hydrogen in hydrogen water bottles, hydrogen water generators, hydrogen water systems, and so on BulletPoint5 : Professional pH ORP Tester for Home Use: 4 in 1 h2 water tester that can measure pH, hydrogen, ORP, and temperature at the same time. It can not only measure hydrogen water but also can be used to test swimming pools, hydroponics, aquariums, saltwater fish tanks, freshwater fish tanks, koi ponds, beer and wine brewing, drinking water, well water, RO water, well water, ponds, aquaculture, Sewage treatment, etc IncludedComponents : 1* Hydrogen Water Tester; 1*(4.00/6.86/9.18)Calibration powder ItemName : Yewhick Hydrogen Water Tester, 4-in-1 pH ORP H2 Temp Meter Kit, pH Tester Digital, Dissolved Hydrogen Tester for Hydrogen Water Bottle, Accurate pH Hydrogen ORP Meter for Drinking Water ItemPackageDimensions_Height : 1.8 inches ItemPackageDimensions_Length : 7.99 inches ItemPackageDimensions_Width : 3 inches ItemTypeKeyword : science-lab-ph-meters Manufacturer : Yewhick ModelNumber : YY-400S NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : US-YY-400S ProductDescription : Yewhick Hydrogen Water Tester, H2 Water PPB/PPM Meter, 4-in-1 PH ORP H2 Temp Meter Kit, Dissolved Hydrogen Tester for Hydrogen Water Bottle, Accurate pH Hydrogen ORP Meter for Drinking Water Specification: -Brand name: Yewhick -product name: Yewhick Hydrogen Water Tester -weight: 0.17kg -Product size: -weight: 0.17kg -Product size:23 * 8.2 *8.2cm / 9 * 3.2*3.2 inches Package content: --- 1 x 4 IN 1 Hydrogen Water Tester --- 1 x Product Manuals --- 1 x 4.00 pH calibration powder --- 1 x 6.86 pH calibration powder --- 1 x 9.18 pH calibration powder --- 1 x 256MV calibration powder