Measures peak nasal inspiratory flow through the nasal passages; providing information of nasal obstruction. Objective measurement of nasal obstruction for diagnostic uses. 

  • Measures nasal inspiratory flow between 30–370 L/min
  • Judge the degree of obstruction in the nasal airway
  • Helps assess the benefits of therapeutic intervention by providing an objective assessment of nasal airway patency
  • Supplied with medium mask, small masks are available
  • Re-usable masks are also available