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Table 2 Differences in intrinsic resistance and in inspiratory flow rate through the device of some of most commonly used DPIs

From: Dry powder inhalers and the right things to remember: a concept review

  Inspiratory DPI resistance (kPa 0.5L/min) Inspiratory flow rate (L/min)
Breezhaler® 0.017 111
Aerolizer® 0-019 102
Ellipta® 0.027 74
Novolizer® 0.027 72
Accuhaler/Diskus® 0.027 72
Genuair® 0.031 64
Nexthaler® 0.036 54
Turbohaler® 0.039 54
Handihaler® 0.058 37
  1. From [10].