5Methodsï€
Operation Manual 81
About gas saver
Gas saver reduces carrier flow from the split vent after the sample is on the column. It applies
to the Split/Splitless, Multimode, and PTV inlets (all modes) and to the split and splitless
modes of the Volatiles Interface. It is most useful in split applications.
Column head pressure and flow rate are maintained, while split vent flows decrease. Flows—
except column flow—remain at the reduced level until you press .
The pulsed modes of the split/splitless, multimode, and PTV inlets are similar except for the
pressure pulse starting at and ending at Pulse time.
To use gas saver
1 Select Method > Inlets.
2 Scroll down until the Gas Saver option is visible.
3 Select the checkbox next to Gas Saver to enable it.
4 Input the Setpoint. The setpoint must be at least 15 mL/min greater than the column flow.
0.32 mm id 3.2 2.6 0.75
0.53 mm id 5.3 4.2 1.5
Table 3 Column size and carrier flow rate (continued)
Column type Column size Carrier flow rate, mL/min
Hydrogen Helium Nitrogen
01234 567 8
10
20
30
40
50
-1-2
01234 567 8
10
20
30
40
50
-1-2
Split mode
Splitless mode
Split vent flowï€
mL/min
Split vent flowï€
mL/min
Time, min
Time, min
Gas saver
Gas saver
Gas saver
Gas saver
Purge flow
Regular flow
Prep Run
Prep Run
Start
Start
Gas saver time, 3
Gas saver time, 5
Run ends
Run ends
Purge time, 2 min
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