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

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

PFT filter designed as perfect replacement for Microgard.

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

The Filtrette disposable filter mouthpiece for ndd^® spirometers.

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

AstraGuard Disposable Filter for Spirometers and PFT.

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

The Accurette mouthpiece is the perfect replacement for the ndd Spirette^™.

Comfortable. Convenient. Cost-effective.

One-way valves ensure “infection protection”

Cardboard Mouthpieces

Rubber Bite Mouthpiece, 10/PK