EN 23747 Peak Flow - Industry Standard for Peak Expiratory Flow measurement
Peak Expiratory Flow Mini-Wright Standard – Leaderhealthcare
Reference values for peak expiratory flow in Indian adult population using a European Union scale peak flow meter Kodgule R R, Singh V, Dhar R, Saicharan B G, Madas S J, Gogtay
Mini Wright Peak Flow Meter - Standard Range (60-850)-49002