US EPA Method 3C/Method 25C
These methods are typically used for landfill monitoring.
Method 3C analyzes for carbon dioxide (CO2), methane (CH4), nitrogen (N2), and oxygen (O2) with a range of concentrations of 500ppm to 75%.
Method 25C analyzes for carbon dioxide (CO2), methane (CH4), and non-methane organic compounds (NMOC) with a range of concentrations of 30ppmC to 50,000ppmC.
Carbon monoxide (CO) concentrations can also be obtained from the 25C analysis if requested.
BTU values can be calculated from 3C results.
- Unheated sample train
- 4, 6, or 8L tanks
- Vacuum source for purging (or use spare tank)