Alcohol Analysis Gas Chromatography GC-90 Features:

1. The instrument features a full microcomputer control system with a large-screen LED display in both Chinese and English, providing rich and intuitive content.

2. New digital design, integrated electronic circuitry, with excellent reliability and anti-interference capability, featuring a dual-language touch screen for easy parameter setting and operation.

3. The column box structure is compact and well-laid out with uniform temperature distribution. The intelligent dual-channel rear door design allows for faster cooling (from 280°C to 50°C in just 8 minutes), high efficiency, and stable control within 5°C above room temperature, expanding the application range of the instrument.

4. The instrument can be equipped with two packed column vaporization chambers and one capillary column vaporization chamber simultaneously, or with two capillary column vaporization chambers at the same time, and can be expanded from a single amplifier to a dual amplifier. Different combinations are used for various analytical applications, allowing for the installation of up to three detectors simultaneously, such as FID, TCD, and ECD detectors. It facilitates the series and parallel operation of detectors, achieving multi-functionality with a single unit.

5. Optional with different specifications of capillary columns (0.2-0.53MM bore), the reasonable capillary injection system design (with分流/不分流injection, diaphragm purge, and tail purge system) ensures minimal extra-column effects and high column efficiency; resulting in sharp, narrow, and tail-free chromatographic peaks, thus achieving accurate quantification and good repeatability.

6. The instruments feature a unit modular design for easy installation and convenient maintenance; the new FID has a lower detection limit, allowing for easy disassembly and cleaning of the喷口 (nozzle) and ion collection electrodes. The accurately fixed emitter installation structure ensures consistent performance across all units.

7. The air path features a dual design of pre-pressure stabilization followed by flow stabilization; offering a stable adjustment mode with high precision, reliability, and easy, intuitive flow regulation. It includes gas cutoff/leakage protection and alert functions, capable of automatically cutting off the TCD bridge current to safeguard the rhenium tungsten wire from damage.

8. Equipped with a six-way temperature control system, including the column chamber, vaporization chamber, detection room, conversion furnace, and external control events.

9. Features a 9th-order linear temperature ramp function, capable of meeting the analysis needs for multi-component samples.

10. Features power failure protection, over-temperature protection, and automatic startup check.

Alcohol Analysis Gas Chromatography GC-90 Technical Specifications

Pole box

Temperature Control Range: 6°C above room temperature to 400°C

Temperature Control Accuracy: ±0.1℃ within 200℃

Within 200℃ to 399℃ with an accuracy of ±0.2℃

Temperature Program Range: Room Temperature +6℃ to 400℃

Step Level: 9th Step

Rise Rate: 0.1℃～40℃ with increments of 0.1℃; initially, the time range for start and stop is 0-6000min, with increments of 1min

2.白酒 Chromatograph Injector

Temperature Control Range: 6°C above room temperature to 400°C

3. Hydrogen Flame Ionization Detector (FID)

Inspiration Degree: Mt ≤ 1 × 10^-11 g/s (n-hexadecane)

Noise: ≤5×10^-14A

Drift: ≤1×10^-13A/15min

Linear Range: ≥10^6