Electronic peak flow meter (Asuma One) Safe T-Way Mouthpiece 1 box (200 pieces) 20246 1 box (200 pieces)

This is a disposable type equipped with a one-way valve so that air can only be exhaled and not inhaled. It is suitable for use by many subjects with devices that measure forced expiration from the maximum inhalation position, such as the Hi-Checker or Micro. Safe T-Way Mouthpiece Quantity: 1 box (200 pieces) Material: Paper, resin Outer diameter: φ30mm Compatible models: 8-7029-01, 8-7032-01, 8-9587-01, 8-9589-01, 8-9589-02 *This is not a medical device.