ASTM D6729 – Detailed Hydrocarbon Analysis (DHA)

Analyzer Description

100 meter capillary column, FID
Sample type:
Spark-ignition engine fuels, including mixtures containing oxygenates with boiling ranges up to 225°C
Components separated:
Approximately C1 – C15 hydrocarbons
Methanol, ethanol, t-butanol, MTBE, ETBE, TAME
Concentration range:
0.01 to approximately 30 mass %
Methods met:
ASTM D6729

Typical Chromatogram

DHA Chromatogram

Key Features and Benefits

  • Standard runtime of 140-150 minutes
  • Fast DHA using hydrogen carrier gas reduces runtime to 82 minutes
  • Includes Wasson-ECE Dragon DHA software to aid in peak identification and data analysis

DHA Literature (PDF)