Spirotube Mouthpieces & Peakflow Meter Accessories

For any respiratory practice running pulmonary function or peak flow testing, the disposable mouthpiece is the one component that touches every patient — which makes it the one you can't afford to run short on. Spirotube mouthpieces from SDI Diagnostics are the single-use, cardboard-tube style mouthpieces designed to pair with peak flow meters and spirometry equipment, giving each patient a clean interface without cross-contamination between tests.

The SDI Diagnostics Spirotube Peakflow Mouthpieces (29-7000) are built for exactly this workflow. Their consistent inner diameter helps maintain accurate airflow readings, while the disposable design means no cleaning, no reprocessing, and no downtime between patients. Buyers typically stock these by the box, so ordering ahead for a full clinic day or testing session keeps throughput steady during allergy season and back-to-school asthma checks alike.

If you're new to sourcing these, the two questions that come up most are fit and compatibility. Spirotube mouthpieces are engineered to seat with SDI peak flow meters and comparable devices — confirm your meter's port size before ordering in volume. And because they're intended for single-patient use, they're not designed to be sanitized and reused; the value is in the sterility and speed, not in getting a second test out of one tube.

These mouthpieces sit within our broader range of breathing and lung-function supplies. Explore related options in Respiratory Care to round out your testing and monitoring inventory.