Keywords: Normal values for peak expiratory flow - EU scale.png peak expiratory flow PEF Nunn A J and I Gregg 1989 New regression equations for predicting peak expiratory flow in adults Br Med J 298 1068-1070 Adapted by Clement Clarke for use in EU scale - see http //www peakflow com/top_nav/normal_values/index html Peakflow com > Predictive Normal Values Nomogram EU scale Source data in tabulated form may be available from Clement Clarke International Mikael Häggström gallery of 2014 2009-01-11 Normal values for peak expiratory flow - EU scale svg Check categories 2010 August 11 en wikipedia Spirometry en wikipedia Peak_flow_meter Asthma Lung 5 Flow meters Therapy Peak expiratory flow Lungs Medical equipment Spirometry |