Personal Best® Peak Flow Meter measures peak expiratory flow in order to monitor asthma. It is an extremely accurate, durable peak flow meter made from high impact ABS plastic. Personal Best® is pocket sized for easy portability and dishwasher safe. It meets the standards of the National Asthma Education Program and incorporates a patient friendly three-zone management system. It is available in adult and pediatrice models, and is manufactured by Respironics® Healthscan Asthma and Allergy Products and distributed by Hollister-Stier Laboratories.