Linde Gas, with itaccredited laboratory located in Unterschleißheim, is proud to be the first laboratory in Germany to produce accredited ammonia calibration gas mixtures according ISO 17025.
As an innovative company, Linde monitors the market to prepare for future needs and developments. In the case of ammonia as a calibration gas mixture, Linde can support the changes in the automotive emissions testing and engine development industry. Combined with SCR technology, Ammonia is used in the form of urea (Add-Blue) as a reducing agent additive in modern vehicles to minimise NO/NOx emissions. This technology is becoming especially popular for diesel engines in cars and trucks. As a result, ammonia is a new automotive emission species that must be monitored as specified in the latest EURO 6 automotive emissions legislation. The new EURO 6 norm forces the automotive emissions testing industry to use high precision traceable calibration gas mixtures for measurements. Linde wants to continue to deserve the trust given to us by our customers by developing new products according to these changing legislative guidelines.
This new accredited method for measuring ammonia allows Linde, in its laboratory in Unterschleißheim, to certify ammonia in the range of 5x10-6 to 500x10-6 mol/mol (amount of substance) or in other words 5-500 ppm (parts per million) in a balance of nitrogen according to ISO17025. Extensive experience in wet chemical analytical methods and deep knowledge in preparing cylinders for highly reactive gas mixtures has enabled Linde to develop & validate these accredited methods.
Linde wants to play a leading role in the protection of the environment. “Our ability to provide such accredited mixtures can make the difference in our desire to be a step closer to our customers,” says Mr. Schmid, head of the accredited ISO 17025 laboratory at Linde Unterschleißheim. He adds that “the successes we see with ISO 17025 accredited mixtures give us the confirmation from our customers that we are moving in the right direction.”