PFT/Spirometry Filters

AstraGuard Disposable Filter for Spirometers and PFT.

The AstraGuard PFT Filter is designed to fit all Astra™ Spirometers.

The Filtrette A disposable filtered mouthpiece for ndd^® EasyOne Air^® spirometers.

The Filtrette disposable filter mouthpiece for ndd^® spirometers.

PulmoGuard A Filters for ndd™ EasyOne Air™ Spirometer

PFT filter that fits ndd™ EasyOne Air™ Spirometer without an adapter.

PFT filter designed for use with WelchAllyn, Collins, and Astra equipment.

The leader in PFT filters – fits most PFT devices without adapters.

PulmoGuard K Disposable PFT filter

PFT filter designed for use on MGC® with Prevent®
*Prevent Not Included

PFT filter that fits most ndd™ devices without an adapter.

PFT filter designed for use on Midmark® IQ Spiro®.

PFT filter designed as perfect replacement for Microgard.

PulmoGuard V PFT filter designed for use with Vitalograph, Morgan, MIR, and Micro Direct equipment.