As a calibration laboratory according to DIN EN ISO/IEC 17025:2005, SINN MESSTECHNIK is concerned with the calibration of critically operated Venturi nozzles in the flow range of 16 to 17108 dm³ per hour. The best measurement uncertainties (0.20 and 0.23%, k=2) mark the peak value of the calibration laboratories accredited by the DAkkS. Only national metrology institutes (e.g. PTB, NMi) offer even lower uncertainties. The issued calibration certificates naturally comply with the relevant regulations.