Peak Flow Meter

A peak flow meter is a portable, easy-to-use device that measures how well your lungs are able to expel air. By blowing a quick blast of air through a mouthpiece on one end, the peak flow meter can measure the force of air in litres per minute and give you a reading on a built-in numbered scale. If you have asthma, your doctor may recommend that you use a peak flow meter to help track your asthma control.

Measures how well air moves out of your lungs, for asthma sufferers

• Standard range peak flow meter
• Easy to read graduations
• Routine use will help you predict an oncoming asthma attack
• The standard range model is suitable for adults with a regular breath capacity

How to use a peak flow meter

1. Reset your peak flow meter so the pointer is pushed back to the first line of the scale - this is usually 60
2. Hold the peak flow meter so it's horizontal and make sure that your fingers are not obstructing the measurement scale
3. Breathe in as deeply as you can and place your lips tightly around the mouthpiece
4. Breathe out as quickly and as hard as you can
5. Make a note of the reading shown on the measurement scale

Range of normal values for a peak flow test