GC3420A Gas Chromatograph from MRC

● Column oven:
Operating temperature range: ambient
temperature to 400°C;
Dual opening-door at the back of column oven;
Cooling time: 250°C to 50°C in 5 min:
Programmable oven with 4-ramp temperature
control;
Temperature programming rate: 0.1~50°C/min
● Injector system:
Operating temperature range: ambient
temperature to 400°C
● Thermal conductivity detector -TCD:
Maximum temperature: 400°C
Sensitivity: ≥10000mv • mL/mg (for butane)
Linear range: 105
Current range: 50 to 400mA
● Filament protection:
If He or H2 carrier gas flow in the detector cell is
cut off for 4 minutes, filament power will be shut off
automatically.
● Flame ionization detector-FID:
Maximum temperature: 400°C
Minimum detectivity: ≤5x10-12g/s (n-C16)
Linear range: 107
Flameout hint: monitoring the status of GC
continuously after being turned on.
● Electron capture detector-ECD:
Maximum temperature: 400°C
Minimum detectivity: ≤0.1pg/mL (y-666)
Linear range: 104
Emission source: 11 mC63Ni
● Flame photometric detector-FPD:
Maximum temperature 400°C
Minimum detectivity:
[P] ≤2x10-12g/s (tributyl phosphate)
[S] ≤2x10-10g/s (p-methylsulfurphosoharous)
Linear range: [P]:105 [S]: 103
Two air-hydrogen flames: For large volume injection
or trace sample injection analyses;
Single air-hydrogen flame: sulfur sensitivity can be
increased;
Direct output: for phosphorus or sulfur analyses;
Square-root output: for sulfur analyses:
Exposed-light protection:
When exposed-light current is more than 12pA, high
voltage will be cut off automatically.
● Nitrogen-phosphorus detector-TSD:
Maximum temperature: 400°C
Minimum detectivity:
[N] ≤2x10-13g/s (azobenzene)
[P] ≤1x10-13g/s (malathion)
Linear range: [N]:105 [P]: 104.

 Self-diagnostic function:

 1) Core tests; 2) Automatic tests; 3) Extended tests;

 4) Basic tests; Monitor the status of GC continuously.

 Once finding faults, it’ll display the information and show

 the wrong zone and the settling method.

● Self-protective function:

 1) Overrun temperature protection; 2) Short circuit hint;

 3) TCD filament protection; 4) FID flameout hint; 5) PFD

 exposed-light protection; 6) Keyboard locking with

 password; etc., ensuring normal running.

● Simple operation, powerful automation:

 1) All parameters can be entered through keyboard with

 prompt function; 2) 4 sets of complete chromatography

 analysis methods can be stored and recalled

 automatically; 3) An auto sampler can be connected; 4)

 Parameters can be modified instantly while the GC is

 running: 5) Chromatography analysis method can be

 activated for 99 times repeatedly at the same time Its

 especially suitable for unattended operation.

● More choices of injectors:

 1) TCD; 2) FID; 3) ECD; 4) FPD 5) TSD

 Maximum of two TCDs or three different kinds of

 detectors can be installed.

● Reactor:

 1) Internal; 2) external • Time programming of detectors:

 Each of detectors has 5-ramp programmable time

 control. Output-signal, attenuation range, and polarity