Features

• Robust and hardwearing
• Features comfortable integral mouthpiece
• Suitable for adults and children
• Suitable for multi-subject use with SafeTway mouthpiece
• Variable orifice simple mechanical peak flow meter
• Better than 5% or 10 L/min whichever is greater repeatability
• Better than 5% or 10 L/min whichever is greater inter-instrument variation
• Daily record chart included
• Piston/spring and moveable pointer measuring principle
• A/B difference less than 15 L/min/15% frequency response
• Multi-language instruction sheet
• 0 to 50 °C Storage