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PFT Accessories

Our PFT accessories include sophisticated mouthpieces and filters that support pulmonary function testing (PFT), while promoting compliance, coherence and prevention of cross-contamination.

The FreeFlow™ pulmonary function testing (PFT) mouthpiece helps correctly position and hold down the tongue during the testing.
Material compliance
A latex-free specialty elastomer, the device complies with FDA regulations, intended for single or repeated use.
Coherence support
During IOS measurement, the device can help patients with active tongues reach the needed coherence.


The MicroGard® pulmonary function testing (PFT) filter acts as a barrier to viral and bacterial cross-contamination.
Kit Options
II B kit – Oval filter with nose clip
II C kit – Round filter with nose clip and rubber mouthpiece
II C filter – Round filter
Less resistance
The MicroGard II filter is well balanced between optimized filtration efficiency and minimal resistance (Delta P) to airflow.
Optimum performance
The MicroGard II filter has gone through full verification and validation with Vmax®, Jaeger® and Micro Medical equipment.
(2018 Vyaire)