TruZone Peak Flow Meter $17.10 INVIRC1198 Measures peak expiratory flows easily and accurately for effective asthma management. Small, lightweight meter is simple to hold and use. Designed for use with children or adults. Logarithmic scale easily measures low flow for pediatric use or normal flow for adult use. Unique ColorZone™ system makes it easy to monitor changes in lung function. Meets current ATS standards. 1-year warranty.
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