The calibration is performed by comparison with measuring and test equipment which is subject to controls according to the Standard Specifications DIN EN ISO 9001/9003.

The measuring results are traceable using the Scientific Norm Lamp Wi41G to the National Standard of the Physikalisch Technischen Bundesanstalt in Braunschweig (PTB) (Federal Institute of Physics). The Calibration Certificate will be required for all applications where measurements, controls and inspections must be carried through required by the applicable laws and regulations, and obligatory Test Certificates to be issued. The innovative GOSSEN light measuring technology ensures reliable and high precision in all of their products.