Peak Flow Mouthpieces - One-Way Expiratory Safe-T-Way - Adult & Child Sizes

The low cost, low resistance SafeTway® mouthpiece allows entry of expired air into the measuring system, but not back to the test subject.

This simple, yet effective patented design prevents concerns of accidental inhalation of pathogens.

The Mini SafeTway, with a 22mm diameter mouthpiece, is for paediatric use or for elderly test subjects who have difficulty fitting their mouth properly around the standard mouthpiece size.