The ideal scenario when you inject your sample into the liner in split mode is to get rapid volatilization and homogeneous mixing with the carrier gas. In split mode, most of the sample will pass out the split vent to atmosphere and only a small proportion will flow into the column. This is usually about 1%. At the bottom of the injection port a small part of this mixture will transfer to the column, while the bulk of the mixture will leave the inlet via the SPLIT VENT. To get a consistent SPLIT RATIO, the sample (solvent + solute) must be mixed with the carrier gas to give a homogeneous mixture.
|SGE's Liner Selection Tool|