| Name | Spirometer Types |
| ADInstruments | Student |
| AME - Advanced Medical Engineering | Portable, Office |
| Benson Medical Instruments | Office |
| Bionet America | Portable, Office |
| BTL | Personal, Office |
| Burdick Direct | Portable |
| Cardioline | Portable, Office |
| Cosmed | Portable, Office |
| Custo-Med | Office |
| EMA Engineering | Portable, Office |
| ERT | Personal, Portable, Office |
| FIM Medical | Portable, Office |
| Fukuda Sangyo | Portable, Office |
| Futuremed | Office |
| Ganshorn Medizin Electonic | Office, Lab |
| Geratherm | Portable, Office |
| GIMA | Portable |
| Jones | Office |
| Kalamed | Portable, Office |
| Maestros | Portable, Office |
| M&B Electronic Instruments | Portable, Office |
| MDSpiro-MicroDirect | Portable, Office |
| MEC | Portable |
| Medichip | Office |
| Medikro | Office, Lab |
| Medisoft | Personal |
| Medset Medizintechnik GMBH | Office |
| MEE | Portable, Office |
| MES | Lab |
| MGC Diagnostics | Personal, Portable, Office |
| Midmark | Portable, Office |
| MIR | Personal, Portable, Office |
| Morgan Scientific | Office, Lab |
| NDD | Student |
| Neulog | Personal, Office, Lab |
| Nickel-Electro Ltd. | Student |
| Nspire | Portable, Office |
| OMI | Student |
| PASCO | Student |
| PHYWE Systeme GMBH | Office |
| Piston Medical | Portable, Office |
| QRS | Portable, Office |
| RMS | Portable, Office |
| SCHILLER | Portable, Office |
| SDI | Portable, Office |
| Sibel | Personal |
| SpiroPD | Personal, Portable |
| Thormed | Office |
| Uni-Em | Student |
| Vacumed | Student |
| Vernier | Student |
| Vitalograph | Portable, Office |
| Vyaire | Personal, Portable, Office, Lab |
| Welch Allyn | Portable, Office |
| Wuhan Cubic Optoelectronics Co. | Office |
Pulmonary Function Equipment Buyer's Guide