Shimadzu GC-2014 Instruction Manual

145
12 Injection Port
12.3
12.
GC-2014
12.3Direct Injection System
Q Direct injection system
In a direct injection system, a wide-bore (0.53 mm or greater) column is used. Nearly the
entire amount of sample injected is inrtoduced on the column. This usually results in better
sensitivity than narrow-bore columns with split injections. However, peak shapes are broad,
which decreases resolution and can lead to a higher S/N ratio.
The direct injection system uses a WBI (wide-bore injection) injection port. When WBI is
specified, DIRECT injection mode is automatically used and split mode is not available on
the [INJ] key main screen.
Fig. 12.3.1
Control
Control
TFC
CARRIER
PURGE
PURGE VENT
Capillary column

Shimadzu GC-2014 Specifications

General

Type	Gas Chromatograph
Display	LCD
Maximum Heating Rate	120°C/min
Data Acquisition	Digital
Maximum Number of Detectors	4
Weight	Approx. 45 kg
Carrier Gas	Helium, Nitrogen, Hydrogen
Detector Options	FID, TCD, ECD, FPD
Injection Port	Split/Splitless, On-column
Gas Control	Electronic Flow Control (EFC)
Temperature Programming Rate	0.1 to 120 °C/min
Power Requirements	230 V AC, 50/60 Hz
Detector Temperature Range	Up to 400°C (depending on detector type)