- Carbon and Nitrogen in Solids
- Oxygen and Hydrogen in Solids
- Sulfur in Solids
- Oxygen and Hydrogen of Water
- Dissolved Organic Carbon (DOC) in Water
- Dissolved Inorganic Carbon (DIC) in Water
- Carbonate
- Carbon Dioxide (CO2) in Gas
- Methane (CH4) in Gas
- Nitrogen (N2) and/or Nitrous Oxide (N2O) in Gas
- Nitrate (NO3) in Water
- Compound-Specific Stable Isotope Analysis (CSIA)