Greisinger Water Quality & Safety Analysers Multi tester 623455 - Greisinger 474132, The Greisinger G7500 Multi tester, manufactured by Greisinger, is designed for comprehensive water quality analysis, measuring parameters such as pH, ORP, temperature, oxygen saturation, oxygen concentration, and conductivity. This versatile device is ideal for environmental testing, freshwater quality analysis, and waste water testing. It is commonly used in applications like fish breeding, fish tank maintenance, swimming pool and pond water testing. Greisinger 474132 G7500 Multi-Tester pH/ORP/Temp/O2/Conductivity Analysis