| Company | Name | Sensor | Tests |
| Chest M.I. | Chestac C-8900, Type D | Volume Displacement | Spiro, Helium Dilution, DLCO |
| Chest M.I. | Chestac C-8900, Type DN | Volume Displacement | Spiro, N2 Washout, DLCO |
| Cosmed | Quark PFT | Turbine, Pneumotach or Disposable Pneumotach | Spiro, N2 Washout, DLCO |
| Eco Physics | Exhalyzer D | Ultrasonic | LCI, N2 Washout, Exhaled NO, ROCC |
| Ganshorn Medezin Electronic | Powercube Diffusion + | Ultrasonic | DLCO, SB-Helium TLC |
| Geratherm | Diffustik | Pneumotach
| Spiro, N2 Washout, DLCO |
| MEC | PFT Diffusion 100 | Pneumotach | Spiro, DLCO |
| Medisoft | Hypair Compact+ | Pneumotach
| Spiro, N2 Washout, DLCO |
| Medisoft | Spiroair | Volume | Spiro, Helium LV, DLCO |
| MEE | Smart PFT CO Transfer | Pneumotach | Spiro, DLCO |
| MES | Lungtest 1000 SB | Pneumotach | Spiro, DLCO |
| MGC Diag | Ultima PFX | Pitot tube
| Spiro, N2 Washout, DLCO |
| Morgan Scientific | Transair3 | Pneumotach | Spiro, N2 Washout, DLCO |
| Morgan Scientific | SpiroAir | Volume Displacement | Spiro, Helium Dilution, DLCO |
| NDD | EasyOne Pro Lab | Ultrasonic | Spiro, N2 Washout, DLCO |
| NDD | EasyOne Pro | Ultrasonic | Spiro, DLCO |
| Nspire | KoKo Px | Pneumotach | 980 Liters |
| Piston Medical | PDT-111/d | Pitot tube | Spiro, DLCO |
| Vyaire | Masterscreen PFT System | Pneumotach | Spiro, Helium Dilution, DLCO |
| Vyaire | Vmax Encore 22 | Mass Flow
| Spiro, N2 Washout, DLCO |
Pulmonary Function Equipment Buyer's Guide