Specification BatteriesIncluded : 1 BatteriesRequired : 1 Brand : Yewhick BulletPoint : Accurate Readings: Digital pH meter with a backlit LCD display for precise measurement of pH levels from 0-14 pH BulletPoint1 : 5 in 1 Multifunction Tester: pH, salinity, TDS, EC, and temperature are perfectly combined in one meter, help to know the pH and EC PPM to feed your plants. A 5 in 1 meter that meets the needs of any serious grower and saves time and money. BulletPoint2 : Test water systems level: The Yewhick EC pH Tester digital can help control the pH EC of hydroponic nutrient solution. EC range of 500-2000 µS/cm is considered optimal for hydroponic gardening, and the optimal pH value is the slightly acidic range of 5.5-6.5; Can help you quickly and accurately confirm whether the hydroponic nutrient solution's values are up to standard or not BulletPoint3 : Professional Water Hydroponics pH Tester: The TDS meter digital water tester is equipped with IP67 waterproof ABS, high-resolution LCD backlight, and replaceable probe and battery design, all details for high quality and long-term use. Up to 2000 hours of continuous use with 3 LR44 alkaline batteries (3 more free) BulletPoint4 : High accuracy and fast measurement: Backed by Yewhick quality pH sensor and EC sensor with low impedance, ensuring high response rate auto. temp. With automatic temperature compensation. compensation (ATC) ensures accuracy in various temperatures (32 to 122F) BulletPoint5 : What You Get: 1 x 5 in 1pH Tester Meter, 1 x Manual, 1 x Lanyard, 6 x batteries, 1 x 4.00 pH calibration powder, 1 x 6.86 pH calibration powder, 1 x 9.18 pH calibration powder, 1 x 1413uS/cm Solution, 1 x 12.88mS/cm Solution ContainsLiquidContents : 1 ExternallyAssignedProductIdentifier : 7675530016284 IncludedComponents : 1 x water quality tester;3 x pH calibration powder;2 xCalibration Solution ItemName : Yewhick pH Meter Water, 5 in 1 pH EC TDS Temp Salt Meter for Hydroponics EC and PPM Water Tester Digital pH PPM Meter for Nutrients Growing Hydroponics Gardening DWC hydroponics System ItemPackageDimensions_Height : 1.8 inches ItemPackageDimensions_Length : 8.8 inches ItemPackageDimensions_Width : 5.3 inches ItemTypeKeyword : science-lab-ph-meters LiquidVolume : 60 milliliters Manufacturer : Yewhick ModelNumber : YY-9909B-A NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : YY-9909B-A ProductDescription : Yewhick pH Meter Water, 5 in 1 pH EC TDS Temp Salt Meter for Hydroponics EC and PPM Water Tester Digital pH PPM Meter for Nutrients Growing Hydroponics Gardening DWC hydroponics System Specification: -Brand name: Yewhick -product name: 5 in 1 -weight: 0.17kg -Product size: -- 5 IN 1 water quality tester: 23 * 8.2 *8.2cm / 9 * 3.2*3.2 inches Package content: --- 1 x 5 IN 1 water quality 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 1413 uS/cm Calibration solution --- 1 x 12.88 mS/cm Calibration solution