The calibration of sensors 
              is the most important thing for getting accurate results. But sometimes 
              the calibration is difficult due to the high chemical reactivity 
              of compounds (e.g. H2S) or due to physical aspects (oxygen). The 
              weight out of salts and the step by step dilution with water is 
              uncertain too, even though the work was done very carefully. Therefore 
              AMT GmbH offers not only innovative sensors, but also generators 
              producing online and dynamically stepless adjustable standard solutions 
              for the calibration of sensors: