Vyaire Medical Disposable AsthmaCheck Peak Flow Meter for Monitoring Respiratory Conditions Such As Asthma.

• Built-in, three-zone system allows flexibility in setting the zones to meet individual needs.
• Meets ATS standards for accuracy and precision.
• Easy grip handle to direct hands away from the airflow path.
• Linear scale measures from 60 to 810 L/min., in increments of 10 L/min.
• Can be cleaned with soap and water and is top-rack, dishwasher safe.
• Measures 2.25" x 6"