User guide

Inlets 8

Advanced User Guide 229

Cold split introduction

For cold split sample introduction, use an initial inlet

temperature below the normal boiling point of the solvent. If the

liner volume is enough to hold all the vaporized solvent, start

the first inlet temperature ramp at 0.1 minutes with a high

heating rate (500 °C/min or higher). The final temperature

should be high enough to volatilize the heaviest analytes from

the liner and should be held for at least 5 minutes. A final

temperature of 350 °C for 5 minutes has proven sufficient to

quantitatively transfer C

For larger injection volumes or to eliminate the solvent, hold the

initial temperature long enough to vent the solvent through the

split vent and then begin the first ramp. Use a fast rate for

thermally stable analytes. Slower rates may help minimize

thermal degradation in the inlet.

Valve

Frit Frit

Valve

EPC Module

Valve

Split Vent Trap

PTV Inlet Weldment

FS = Flow Sensor

PS = Pressure Sensor

Split

Carrier Supply

80 PSI

Septum Purge

Column