Anaesthetic and respiratory equipment. Peak expiratory flow meters for the assessment of pulmonary function in spontaneously breathing humans algolia-ignore • Selection relative to the

• Selection relative to the test environment

the choices between the options is not made by the individual user

Two test-chart files: a short-term instability test chart and spatial non-uniformity test chart were added

duration and energy content

and cooling

Anaesthetic and respiratory equipment. Peak expiratory flow meters for the assessment of pulmonary function in spontaneously breathing humans algolia-ignore • Selection relative to the1 Scope This International Standard specifies requirements for peak expiratory flow meters (PEFMs) intended for the assessment of pulmonary function in spontaneously breathing humans. This International Standard covers all devices that measure peak expiratory flowrate in spontaneously breathing humans either as part of an integrated lung function device or as a stand alone device. Planning and design of products applying to this International Standard