FITS: Vitalograph, Medisoft PFT, and most office spirometers
- 28501 Eco BVF with short oval mouthpiece (x 100)
- 28554 Eco BVF with oval bite lip (x 75)
FITS: Jaeger/CareFusion/Vyaire and Ganshorn devices
- 28563 Eco BVF with short oval mouthpiece (x 100)
- 28557 Eco BVF with oval bite lip (x 75)