Want to buy a FeNO monitor? Herli Medical offers reliable solutions for airway diagnostics. The measurement of nitric oxide (FeNO) in exhaled air helps doctors detect airway inflammation and monitor asthmatics. Herli Medical is the online reference for quality and user-friendly FeNO monitors. Our devices are suitable for use in GP practices, lung specialist services and preventive care. With a FeNO meter such as the NObreath V2, you measure quickly, easily and completely painlessly. The results are immediately available and give you as a healthcare provider valuable insights to treat your patient in a targeted way.