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WAL has decades of experience analyzing a variety of solid fuels for physical properties, content and combustion value. We have equipment on-site to process coal, coke, petcoke, biomass, biochar, compressed pellets and cogeneration/alternative fuels such as garbage, TDF (Tire-Derived Fuel), ASR (Auto Salvage Residue), and RDF (Refuse-Derived Fuel).
Typical analyses are:
- Proximate Analysis –Moisture, Ash, Volatile Matter and Fixed Carbon

- Ultimate Analysis – Moisture, Ash, Carbon, Hydrogen, Nitrogen, Sulfur and Oxygen
- Heating Value – Calorific value in Btu/lb
- Full Prox – includes Proximate, Sulfur and Heating Value
- Short Prox – includes Moisture, Ash, Sulfur and Heating Value
- Prox-Ult-Btu – includes Proximate, Ultimate and Heating Value
Other analyses available include, but are not limited to:
- Any of the above components individually

- Elemental Ash Analysis by XRF
- Chlorine and/or Bromine by XRF
- Bulk Density
- Fluorine
- Mercury by Direct Combustion
- EqM – Equilibrium Moisture
- FSI – Free Swelling Index
- Forms of Sulfur
- HGI – Hardgrove Grindability Index
- Mineral Carbon – Carbonate C and inorganic C
- Specific Gravity
- Water or Acid Soluble Alkalies
- A wide range of elements by ICP-OES or ICP-MS
Analytical methods
For a more detailed list, contact us.
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Methods |
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Proximate Analysis of Coal – Moisture, Ash, Volatile Matter & Fixed Carbon (by difference) |
D7582 |
Ultimate Analysis of Coal – Moisture, Ash, Carbon, Hydrogen, Nitrogen, Sulfur, & Oxygen (by difference) |
D7582, D5373, D4239 |
EqM – Equilibrium Moisture |
D1412 |
FSI – Free Swelling Index |
D720 |
Forms of Sulfur (pyritic, sulfate, organic, total) |
D2492 |
Heating Value of Coal (calorific value, Btu/lb – includes % sulfur) |
D5865, D4239 |
HGI – Hardgrove Grindability Index |
D409 |
Moisture, Total in Coal |
D3302 |
Mercury in Coal by Direct Combustion |
D6722 |
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