sentence: Then we tested the following 10 devices that did not contain any drug ( placebo inhalers ) in random order : Dry-powder inhalers ( DPI ) : Breezhaler ® , Diskus ® , Elpenhaler ® , Genuair ® , Nexthaler ® , Forspiro ® , Spiromax ® , Turbohaler ® Pressurized metered-dose inhaler ( pMDI ) : A customary pMDI ( Flutiform ® pMDI ) was usedSoft mist inhaler ( SMI ) : Respimat ® All selected devices represented approved products in Germany with a high market share .