Gas Chromatography

Up to three injectors may be installed and operated simultaneously with independent temperature control.

Flexible Sample Introduction System

Up to three injectors may be installed and operated simultaneously with independent temperature control. Wide range of injectors is available to be chosen from for various applications.

Sample injector for single/dual packed columns

- Several alternative sample introduction methods, including on-column sample introduction and six-way valve injection;

- Adapter for injection to capillary column (0.53 mm i.d.).

Sample injector for capillary column

- Special sample injector with septum purge and back-pressure valve splitting

- Special programmable split/splitless injector with solenoid valve, septum purge, back-pressure valve splitting, and standalone carrier gas and make-up gas flow

- Modified dual-packed-column sample injector for injection to capillary column by employing some connectors and back-pressure valve splitting.

Advanced Pneumatics

1. Carrier gas control with constant pressure valve and constant flow valve;

2. Air and hydrogen control with constant pressure valve and needle valve;

3. Flow easily adjustable through constant flow valve and needle valve with digital display;

4. High precision, reproducibility and reliability.

Sensitive and Reliable Detector

Up to three detectors (FID, TCD, ECD, etc.) may be installed and operated simultaneously. Simultaneous multi-detection with detectors in series or in parallel meets the various analysis requirements.

Advanced Microcomputer Control System

With advanced control techniques, microcomputer-based temperature control system provides superior performance.

- High temperature precision (± 0.5°C), high reliability, and high resistance to disturbance;

- Five independent heated zones, with maximum operating temperature of 400°C;

- Temperature-limit setting and overheat protection.

Instrument control is accomplished through the keypad, and the instrument offers outstanding capabilities.

- Self-diagnosis;

- Power-off protection;

- Ten methods saving and reloading;

- Two controls of external events;

- Timing on/off of temperature control;

- Timing program, detector status, measurement range, polarity and current setting and display;

- Temperature setting values, actual values, retention time and analysis time display.

High-performance spacious column oven

1. Spacious column oven accommodating capillary column and dual packed columns and convenient for column installation;

2. Fast heat-up and rapid cool-down column oven with automated back-door opening (300°C to 50°C in 7 min);

3. Available for both near-ambient and above ambient temperature control;

4. Supports 5 oven ramps with 6 plateaus.

Specification:

GC112A-1	Sample injector with special-purpose capillary column, having the blowing-up function of diaphragm and the shunting regulation with back pressure valves+ make-up gas adjustment+ FID
GC112A-2	Sample injector with Double Packed Column + TCD
GC112A-3	Sample injector with Packed Column + FID
GC112A-4	Sample injector with Double Packed Column + The (annex or appendix or enclosure) with special-purpose capillary Column+ back pressure valves+Double FID
GC112A-5	Sample injector with Double Packed Column + Special-purpose capillary column having the blowing-up function of diaphragm and the shunting regulation with back pressure valves + Double FID
GC112A-6	Sample injector with Double Packed Column + Sample injector with special-purpose capillary column, having carrier gas control, the blowing-up function of diaphragm and the shunting regulation with back pressure valves+ make-up gas adjustment + Double FID

Instrument technical index and operational requirement

Column oven temperature index

Temperature range	7°C ~ 400°C above room temperature, (increment 1°C)
Temperature control accuracy	better than ±0.1°C at 200°C
Temperature program ramps	5 ramps in total
Program setting	0.1°C~40°C/min, (increment 0.1°C) at 200°C
Total time of total program	Up to 655 minutes, (increment 0.1°C)

Injector and FID temperature index

Temperature range	7°C~400°C above room temperature, (increment 1°C)
Temperature control accuracy	better than ±0.1°C at 200°C

Hydrogen flame ionization detector (FID)

Minimum detectable quantity	Dt ≤1×10-11 g/s (n-hexadecane)
Fine road-test	Dt ≤8×10-12 g/s (n-hexadecane)
Drift	≤6×10-13 A/h
Linear dynamic range	≥106
Maximum temperature	400°C

 Thermal conductivity detector (TCD)

Sensitivity	S≥2500mv.ml/mg (n-hexadecane)
Tiptop Sensitivity	S≥10000mv.ml/mg (with amplifying circuit)
Noise	≤20 μ V
Baseline drift	≤30 μ V /h
Linear range	≥104
Maximum temperature	400°C

Instrument operational requirement

Power source	220V~±22V 50Hz ± 0.5Hz
Power	≤2000W
Ambient temperature	+5°C ~ +35°C
Relative humidity	≤85%

Gas Chromatography