| Parameter | Test Device | Range | Sensitivity | Detection Principle |
| CO | THERMO 48 series | User may select up to 10,000 ppm | 0.1 ppm | Infrared absorbtion, gas filter correlation detector, microprocessor-based linearization |
| NOx, THC, CH4, N2O, CO2, H2O | MKS 2030 | User may select from multiple ranges | 0.1 ppm | Fourier Transform Infrared (FTIR) |
| O2 | SERVOMEX 1440 | 0% - 25% | 0.10% | Paramagnetic cell, inherently linear |