[Class : 9] Analytical And Measuring Apparatus And Instruments, Namely, Water Quality Testing Instrumentation For Monitoring And Detecting Physical And Chemical Characteristics Of Water, Ph Meters And Testers, Apparatus For Water Quality Or Solution Analysis, Namely, Meters And Testers For Measurement And Testing Of Oxidation Reduction Potential (Orp), Ion Meters And Testers, Conductivity Meters And Testers, Resistivity Meters And Testers, Salt Meters And Testers, Total Dissolved Solids (Tds) Meters And Testers, Electrodes Used As Parts Of Water Quality Or Solution Analysis Apparatus, Parts For Water Quality Or Solution Testing Apparatus, Namely, Sensors For Sensing Physical And Chemical Characteristics Of Water And Other Liquids, Parts For Water Quality Or Solution Testing Apparatus, Namely, Assemblies, Parts For Water Quality Or Solution Testing Apparatus, Namely, Electrodes, Semiconductor Sensors, Replacement Sensors, And Electrode Holders, Combined Meters And Testers For Testing And Measuring Water Quality Or Solution Analysis, Compact Meters And Testers For Testing And Measuring Water Quality Or Solution Analysis.