Our disposable one-way-valved and single patient use mouthpieces, filters and masks are designed to provide protection against possible cross infection in common respiratory procedures.

The expiratory (red) one-way-valved mouthpiece fits standard peak flow meters , digital peak flow meters and spirometers for expiratory use. The patient can exhale forcefully into the peak flow meter or spirometer, and the one-way-valve prevents inhaling through the mouthpiece or equipment it is attached to.

The inspiratory (blue) one-way-valved mouthpiece provides protection in inspiratory procedures. The patient can inhale freely through the mouthpiece on the In-Check or In-Check DIAL, and the one-way-valve prevents the patient from exhaling into the meter.

Disposable adapters for use with the In-Check and In-Check DIAL are available in both pediatric/small mouth and adult sizes.


Single patient use adult and pediatric mouthpieces are an excellent choice when cross contamination is not a concern. Our high quality disposable mouthpieces have a non-absorbent finish which provide no sticking to lips, less irritation, and greater comfort.

Single patient use filters trap not only expectorated matter, but capture organisms as small as viruses through a polarization effect. The single patient use filter minimizes the spread of infectious diseases. For use with the In-Check or In-Check DIAL.

Single patient use face masks incorporate a flexible dome to ensure maximum patient comfort. The gas-tight, low pressure seal helps to eliminate leakage. This latex free mask can be added to help direct the aerosol delivery for pediatric or adult patients. Use with the In-Check.