The measurement of methane and non-methane components in landfill gas is essential for compliance with air quality operating permit requirements. The Mi-croFID flame ionization detector offers this capability in a portable and easy to operate instrument. Featuring flame ionization detection (FID) technology, the Mi-croFID measures methane gas accurately and quickly. A single tutor key prompts the operator through the basic operations, and critical data is displayed in less than three seconds. Further, the MicroFID provides datalogging capability so readings can be stored in the instrument and downloaded to a computer for subsequent analysis and recordkeeping purposes. Non-methane hydrocarbon readings are performed with the simple addition of a snap-on charcoal filter capsule. The MicroFID meets and exceeds the requirements for EPA Federal Reference Method 21 for fugitive gas emissions.