Rtx®-DHA columns are ideal for DHA methods and easily meet or exceed both ASTM D6730-01 and Canadian General Standards Board CAN/CGSB 3.0 No. 14.3-99 requirements.

• Excellent responses and peak symmetry for polar oxygenates
• Stable to 340°C
• Crossbond® 5% diphenyl/95% dimethyl polysiloxane—optimized for hydrocarbon analysis

Gasolines are complex mixtures of hundreds of compounds.

Every Rtx®-DHA column is tested for retention, efficiency, stationary phase selectivity, and bleed—guaranteeing reproducible column-to-column performance.

Information about concentrations of the individual components is important for evaluating raw materials and for controlling refinery processes. ASTM D6730-01 outlines a high-resolution GC method for detailed hydrocarbon analysis (DHA) of gasolines.