Specification Brand : Irfora BulletPoint : AWE1AC Alkaline Water Electrolysis Stack (Experimental Grade 1cm2, Circular Electrode) is a electrolzyer hardware that is specially designed for ALK alkaline water electrolysis, using PPS porous membrane and nickel based composite electrode (such as nickel mesh electrode, foam nickel electrode, etc.). This stack can achieve a current density of 0.6-3A/cm2. BulletPoint1 : Replaent pH electrode for pH-990, pH-217, pH-218, pH/EC-9853, pH-117, pH-118, pH-991, pH-3012, /pH-9851, ORP/pH-999. BulletPoint2 : Widely used to test the the pH of aqueous solution/water. BulletPoint3 : 100% brand new accessory for water quality tester. BulletPoint4 : Great laboratory pH electrode probe. BulletPoint5 : Suitable for most pH meter and controller with BNC-Q9 connector. Color : Black IncludedComponents : Other ItemName : Irfora Professional Laboratory Electrode Aquarium Hydroponic Spare Laboratory pH Electrode Probe BNC Controller Meter Connector ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 18 centimeters ItemPackageDimensions_Width : 5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : lab-electrodes Manufacturer : Irfora Material : copper ModelNumber : AWE1AC-3cell NumberOfItems : 1 PartNumber : LAKUSE1926 ProductDescription : The electrode is composed by the pH glass electrode and reference electrode. It is the measuring element of pH meter, using to measure the pH of aqueous solution/water.