Gas chromatograph for residual solvents in plastic flexible packaging

Gas chromatograph for residual solvents in plastic flexible packagingPlastic flexible packaging uses a large amount of organic solvents in printing, lamination, and coating processes, such as toluene, xylene, ethyl acetate, butanone, butyl acetate, ethanol, isopropanol, etc. These solvents will more or less remain in the composite packaging. If the solvent residue is high and used to package food, drugs, etc., it will not only affect the taste of the food, but also harm people's health. Therefore, the residual solvent amount in the composite film should be detected.

This machine adopts a 5.7-inch LCD vertical display with a large Chinese screen, providing clear and intuitive images. 10 temperature control values can be displayed simultaneously on the same interface, with reserved areas for fault alarm location and time display.The PID temperature control system utilizes the characteristics of bus development technology, adopts control chips, and dual over temperature protection of temperature control software and hardware to ensure the operation of the temperature control system.

Main technical parameters：

Pressure protection method: The carrier gas has pressure protection function. When the gas pressure drops to 0.1mpa, the instrument automatically cuts off the power supply to effectively protect the safety of the chromatographic column.

FID has automatic ignition function, no need for manual ignition

Display mode: 320 × 240 Chinese vertical LCD display

Temperature control area: 10 temperature control channels

Temperature control accuracy: ± 0.1 ℃ - ± 0.2 ℃

Temperature control range: Room temperature ± 8 ℃ -450 ℃, with increments of 1 ℃

Program heating: 16 stage program heating, heating rate 0.1-40 ℃/min, with increments of 0.1 ℃,

Initial and termination time range: 0-6000min, with increments of 1min.

Extreme temperature: protection value 450 ℃

External events: 8-channel external events can be installed with solenoid valves, etc

Power supply: 220V 50HZ 2000W

Gas chromatograph for residual solvents in plastic flexible packaging

Technical specifications of detector

Hydrogen flame ionization detector (FID)
Detection limit: Mt ≤5×10-12G/s (n-hexadecane-isooctane solution);
Noise: ≤ 5 × 10-14A
Drift: ≤ 1 × 10-13A/30min
● Linear range: ≥ 106

● Ignition mode: manual or automatic (customer requirement)

Thermal conductivity detector (TCD):
Sensitivity: S ≥ 3500mV • ml/mg (conventional)

5000mV • ml/mg (highly sensitive) (benzene toluene solution)
Noise: ≤ 10 μ V
Baseline drift: ≤ 30 μ V/30min
● Linear range: ≥ 104

Electron Capture Detector (ECD):
Detection limit: ≤ 1 × 10-14g/s
Noise: ≤ 0.03mV
Baseline drift: ≤ 0.2mV/30min
● Linear range: ≥ 103
● Radioactive source: 63Ni

Flame photometric detector (FPD):
Detection limit: (S) ≤ 5 × 10-11g/s ,(P)≤1×10-12g/s；
Noise: ≤ 0.03mV
Baseline drift: ≤ 0.2mV/30min
● Linear range: ≥ 103（S）,102（P）

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