Shanghai polyol determination gas chromatograph manufacturer

The principle of gas chromatography analysis:

Qualitative analysis by chromatography: Is there a standard substance for the analyzed component, known or unknown?

Chromatographic quantitative analysis: in that range - constant (10-1 `~10-3); Semi trace (10-3~10-5); Trace (10-5-10-7); Trace (10-6~10-9) or ultra trace (≤ 10-9)

The accuracy of chromatographic quantification and analysis is much simpler if semi quantitative requirements are met.

Shanghai polyol determination gas chromatograph manufacturerinstrumentMain technical indicators:

● Interface display: 5.7-inch industrial color LCD screen

Temperature control area: 8 channels, can control dual column boxes, each column box has an independent rear door design.

Temperature control range: 4 ℃ to 450 ℃ above room temperature, increment: 1 ℃, accuracy: ± 0.01 ℃

● Program heating order: 16 orders, 17 platforms

● Lift rate: 0.1-39 ℃/min (ordinary type); 0.1-80 ℃/min (high-speed type)

External events: 8 channels; The auxiliary control output consists of 2 channels

● Sample injector types: packed column injection, capillary injection, gas valve injection, headspace injection, thermal analysis injection, blowdown collector injection, flash evaporation injection, etc

● Number of detectors: up to 9 high-performance detector options are available, including FID, TCD, ECD, FPD, NPD, PID, PDI ID, ZD, DID, etc., and 3 types of detectors can be installed simultaneously

● Gas path control: Mechanical valve control mode and EPC mode can be selected, or the two modes can be mixed and used.

EPC and EFC working modes: 2 types; Constant current mode, constant voltage mode

EPC and EFC working gases: 5 types; Nitrogen, hydrogen, air, helium, argon

EPC and EFC lift: 4th order

EPC and EFC control range: pressure: 0-0.6MPa; Flow rate 0-100mL/min or 0-500mL/min (air)

● Pressure sensor:

Accuracy:<± 2% of full scale

Reproducibility:<± 0.05 KPa

Temperature coefficient:<± 0.01 KPa/° C

● Flow sensor:

Accuracy:<± 5% of full scale

Reproducibility:<± 0.5% (full scale)

Range: 0-500mL/min

● Start injection: manual or automatic selection

● Communication interface: Ethernet: IEEE802.3

Power supply: 220V ± 10%, 50Hz; 2500W (maximum)

● Volume: 572 × 552 × 465 (height) mm

Weight: 50kg (approximately)

Technical specifications of detector:

Hydrogen flame ionization detector (FID)

★ Detection limit: Mt ≤ 3 × 10-12g/s (n-hexadecane-isooctane solution);

★ Baseline noise: ≤ 5 × 10-14A

★ Baseline drift: ≤ 1 × 10-13A/30min

★ Linear range: ≥ 106

Thermal conductivity detector (TCD):

★ Sensitivity: S ≥ 3500mV • ml/mg (benzene solution) (standard), maximum sensitivity 10000mV • ml/mg (equipped with electronic amplifier board, 2, 4, 8 times optional)

★ Baseline noise: ≤ 10 μ V

★ Baseline drift: ≤ 30 μ V/30min

★ Linear range: ≥ 104

Electron Capture Detector (ECD):

★ Detection limit: ≤ 1 × 10-14g/s

★ Baseline noise: ≤ 3 × 10-13A

★ 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;

★ Baseline noise: ≤ 3 × 10-13A

★ Baseline drift: ≤ 0.2mV/30min

★ Linear range: ≥ 103 (S), 102 (P)

Helium ionization detector (PDIHID):

★Discharge mode: Pulse discharge

★Baseline noise: ≤ 0.1mv

★Baseline drift: ≤ 0.5mv/30min

★Detection limit: ≤ 1.0 × 10-10g/ml

Photoionization detector (PID)

★ Photon energy 10.6eV

★ Light source lifespan ≥ 3000h

★Detection limit: ≤ 1ug/m3 (benzene)

★ Baseline noise: ≤ 8 × 10-14A

★Linear range:≥105

Analysis conditions:

Chromatography column: 30 * 0.53 * 0.5 PEG

Column temperature: 70℃→10min→10℃/min→200℃→20min

Carrier gas: N2 30min/sec

Sample injector: 250℃split injection

Detector: FID 250℃

Sample analysis: polyol mixture