Specification Brand : Eforcase BulletPoint1 : ☆☆pH is an indicator of the strength of acidity and alkalinity of a solution with a very small H concentration ([H] between 1 and 10-14 mol/L) and is numerically equal to the negative logarithm of the hydrogen ion concentration: pH = -lg[H]. BulletPoint2 : ☆☆High-definition screen display, clear and intuitive readings, fully adapt to the needs of all walks of life acid-base testing, and the instrument has automatic correction of the value of the mode, simple and fast operation. BulletPoint3 : ☆☆Low impedance sensitive bulb, formed at once by thousand degrees high temperature, the temperature sensor directly contacts the solution, making the reading more accurate and fast BulletPoint4 : ☆☆Can be widely used for testing tap water, household water , water quality testing, agricultural use, testing cosmetics type testing, breeding water quality measurement. BulletPoint5 : ☆☆pH :7, the solution is alkaline, the greater the pH value, the greater the alkalinity, the smaller the acidity. pH=7, the solution is neutral. done by using a pH meter. Color : blue IncludedComponents : plastic ItemName : PH Meter, High Accuracy Pocket Size PH Tester, Water Quality Tester Digital PH Meter for Water, PH Reader PH Tester Digital PH Pen Water Meter for Hydroponics, Drinking, Pool ItemTypeKeyword : science-lab-ph-meters Manufacturer : Eforcase Material : plastic ModelNumber : LXJZ-L32597 NumberOfItems : 1 PartNumber : LXJZ-L32597 ProductDescription : Specifications: Name: Water Quality Testing Pen Material: ABS plastic Size: 155mmx31mm(LxH) Color: Yellow/Red/Blue