[Class : 9] Analytical And Measuring Apparatus And Instruments; Analytical And Measuring Machines And Instruments For Water Quality Or Solution; Water Quality Meters And Testers; P H Meters And Testers; Orp Meters And Testers, Namely Meters And Testers For Measuring And Testing Parameters Of Oxidation Reduction Potential; Ion Meters And Testers; Conductivity Meters And Testers; Resistivity Meters And Testers; Salt Meters And Testers; Tds Meters And Testers, Namely Meters And Testers For Measuring And Testing Parameters Of Total Dissolved Solids; Electrodes For Water Quality Or Solution Analysis; Glass Electrodes For Water Quality Or Solution Analysis; P H Electrodes For Water Quality Or Solution Analysis; Ion Selective Electrodes For Water Quality Or Solution Analysis; Sensors Used For Water Quality Or Solution Analysis; Transmitters Used For Water Quality Or Solution Analysis; Assemblies Used For Water Quality Or Solution Analysis; Accessories Used For Water Quality Or Solution Analysis.