Our EXHALYZER D utilizes the Multiple Breath Washout (MBW) technique for determination of LCI (Lung Clearance Index) and our CLD 88 sp chemiluminescence NO analyzer measures exhaled breath and nasal Nitric Oxide. Our analyzers are approved as medical devices in Europe, but are not FDA or Health Canada approved, so can only be used for research in the US and Canada. Our Spiroware software makes it easy to perform the tests and analyze the data.