Twelve injector types are available for installation on SRI gas chromatographs. Up to five injectors may be mounted simultaneously on the model 8610C or 8610D. The model 410 can mount a gas sampling valve in addition to the on-column injector which may be upgraded. The model 310 will accommodate a single on-column, heated flash vaporization, heated split/splitless, or PTV injector.

Injector types are selected by the user depending on the particular measurement application, detection limit, and regulatory requirements. The on-column injector is standard equipment on every 8610, 410, and 310 GC. Heated flash vaporization, heated split/splitless, and PTV injectors are all upgrades to the on-column injector.