Split and Splitless injection

Split Injection

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.

Split Injection


SGE's Liner Selection Tool

Split Ratio >>

SGE's liner selection tool helps you select the right inlet liner for your analysis

The tool also includes a handy Vapor Volume Calculator that checks if you are injecting too much for a particular liner.  It can help you avoid the ghost peaks, injector contamination, and quantitation errors associated with Flashback.