[Class : 9] Printed Circuit Boards; Transmitter; Electrodes, Detecting Elements; Diodes, Laser Diodes, Laser Spectrometers; Devices, Systems, As Well As Parts Thereof (Including Computer Programmes, Data Processing Devices, Electronic Controls, Displays, Sensors, Holders, Housings And Armatures) For Measuring, Testing, And Control Of Physical, Chemical And Analytical Properties, Especially For The Potentiometric Measurement, The Conductometry, The Amperometric Measurement, The P H Measurement, The Redox Measurement, The Measurement Of Ions, The Ion Selective Measurement, The Turbidity Measurement, The Oxygen Measurement, The Ozone Measurement, The Carbon Dioxide Measurement, The Measurement Of Gases, The Measurement Of Gases In Gas Mixtures, The Conductivity Measurement, The Total Organic Content Measurement, The Tenside Measurement, The Temperature Measurement, The Pressure Measurement, The Spectroscopy