[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; Combined Meters And Testers For Water Quality Or Solution Analysis;Compact Meters And Testers For Water Quality Or Solution Analysis.