Min. Order Reference FOB Price
10 Pieces US$114.00-135.00 / Piece
Product Description
Digital Spirometer Breathing Exerciser Lung Breathing Diagnostic Vitalograph Portable Spirometer FEATURE: Forced Vital Capacity (FVC), forced expiratory volume in one second (FEV1) to forced vital capacity (FVC) ratio (FEV1/FVC), peak expiratory flow (PEF), forced expiratory flow at 25 % of ...