Microlife PF 100 Peak Flow Meter for Spirometry with FEV1 for $46.99

Buy the Microlife PF 100 Peak Flow Meter for Spirometry with FEV1 at Amazon for $46.99, after $28.01 instant off. This device is used to measure Peak Expiratory Flow (PEF) and Forced Expiratory Volume in 1-second (FEV1) in both children and adults. PEF is the fastest speed air can be blown out of the lungs after inhalation.