Gas Chromatography

What is a Gas Chromatography

Gas chromatography is a powerful analytical technique used in various fields, including pharmaceuticals, environmental analysis, and forensic science. It separates and analyzes the components of a mixture based on their volatility and affinity for the stationary phase. The process involves injecting a vaporized sample onto a column packed with a stationary phase, such as polymers or silica gel. Then, an inert gas propels the sample through the column, allowing the different compounds to interact with the stationary phase at varying rates. As they pass through the column, these compounds separate into distinct peaks on a detector graph. Gas chromatography offers exceptional resolution and sensitivity, enabling the identification and quantification of trace amounts of various analytes within complex mixtures. Moreover, it allows for precise control over experimental parameters such as temperature and flow rate to optimize separation efficiency. This technique has revolutionized chemical analysis by providing highly reliable information crucial for research, quality control processes, and forensic investigations in professional settings.

A gas chromatograph (GC) is an analytical instrument that measures the content of various components in a sample. The analysis performed by a gas chromatograph is called gas chromatography.

Principle of gas chromatography: The sample solution injected into the instrument enters a gas stream which transports the sample into a separation tube known as the "column." (Helium or nitrogen is used as the so-called carrier gas.) The various components are separated inside the column. The detector measures the quantity of the components that exit the column. To measure a sample with an unknown concentration, a standard sample with known concentration is injected into the instrument.

Tags: gas chromatograph, GC, gas Chromatography

GC-7860 Plus/B Gas Chromatography

Gas Chromatography Features

5.7” large LCD screen for GC-7860 Plus gas chromatography and Color Touch Screen is optional for this model. Vacuum Fluorescent screen for GC-7860 B, with an easily operated keypad.
Gas path control: manually or EPC(Electronic Pressure Control), network communication(Ethernet interface IEEE802.3), Computer-controlled operation.
EPC Mode. Precision 0.01ml/min or 0.01Kpa, which ensures better time reproducibility and more reliable results.

EPC work mode: constant current, constant pressure, split.
Pressure control: 4th
EPC work gas: N2, H2, Air, He, Ar.
EPC control range: Pressure 0-0.6Kpa, Flow 0-100sccm or 0-500sccm.
EPC control accuracy: Pressure 0.01Kpa, Flow 0.01sccm.

Support double ovens, double back doors.
Oven Temp increment 1 C degree, accuracy +/-0.01 C degree.
Versatile Injection Mode: Packed column, Capillary split/non-split, Valve, Liquid Automatic Injection, Automatic Head-space Injection, Cracking, Thermal Desorption Injection, Purge, and Trap.
GC-7860 Plus can be equipped with 3 detectors, GC-7860 B can be equipped with 2 detectors: Optional detectors are: HCD, HTCD, UTCD, FID, FPD, ECD, NPD, ZD, PDHID, PID, AID.
Customerized Valve available, which can help users to fulfill complicated multi-dimensional chromatographic analysis tasks.
The program support multi-flow sample to choose MPV system, which has functions of recognizing the number of valves automatically, automatic on-line judgment, valve position selection, valve position analysis memory, max 32 paths of sample flow can be supported.
Temperature control technical parameters:

Temperature control path number: 8
Oven Temperature parameters:
Oven temperature range: 4℃ -450℃ above room temperature.
Oven temperature resolution: +/-0.01℃.
Program ramps: 16.
Program setting: 0.1-39℃/min(Common type), 0.1-80℃/min(High speed type)
Constant temperature time of each program: 0-999min(Increment 0.1min)
Cool-down time: 260℃ to 50℃ in 6 minutes.
Sampler/Detector/Thermal Conductivity Cell
Temperature range: 4℃-450℃(Increment 1℃)
Temperature accuracy: +/-0.01℃.

Enquiry

Gas Chromatography GC7860B

Gas Chromatography GC 7860B Keypad

Gas Chromatography Detector

Hydrogen flame ionization detector (FID) model GS1501E

The limit of detection: ≤ 3×10-12g/s (sixteen alkyl);
baseline noise: ≤5×10-14A
baseline drift: ≤1×10-13A/30min
linear range:≥107

Thermal conductivity detector (TCD)

Hydrogen flame ionization detector (FID) model GS1501E

sensitivity: S ≥ 4000mV•ml/mg (sixteen alkyl) (1, 2, 4, 8 times enlarged ,optional.)
baseline noise: ≤ 10 μ V
baseline drift: ≤ 30 μ V/30min
linear range:≥105

Electron capture detector (ECD) model G130E

The limit of detection: ≤ 1×10-14g/ml(C 666 - isooctane solution)
baseline noise: ≤ 0.03mV
baseline drift: ≤ 0.2mV/30min
linear range: 104
source: 63Ni

Flame photometric detector (FPD)

Electron capture detector (ECD) model G130E

The limit of detection: (S) ≤5×10-12g/s, (P) ≤1×10-13g/s; methyl parathion - ethanol solution)
baseline noise: ≤ 3×10-13A
baseline drift: ≤2×10-12A/30min
linear range: To sulfur≥103, To P ≥105

Gas Generator

Hydrogen Generator EPH-300/500

Low Noise Air Pump EPA-2000/5000

Hydrogen Generator EPH-300/500

Features:

Small footprint;
Plate type electrolytic cell;
Stainless steel anti-draining device;
Automated adjust output flow rate;
LED flow rate display;
High-quality low sulfur rubber sealed, which can improve the gas quality;
The liquid display window was lightened by an LED lamp, easy to maintain.

Technical Parameters:

1. Hydrogen Purity: 99.999%

2. Output Flow Rate: 0-300ml/min 0-500ml/min

3. Output Pressure: 0.4Mpa

4. Max Power: 180W

5. Dimension: 440mm x 210mm x 360mm

6. Net Weight: 12kg /13kg

Tags: Hydrogen generator for gas chromatography

Nitrogen Generator EPN-300/500

Low Noise Air Pump EPA-2000/5000

Hydrogen Generator EPH-300/500

Features

Plate type electrolytic cell;
Stainless steel anti-draining device;
Automated adjust output flow rate;
LED flow rate display;
High-quality low sulfur rubber sealed, which can improve the gas quality.

Technical Parameters

1. Nitrogen Purity: O2 less or equal 3ppm

2. Output Flow Rate: 0-300ml/min 0-500ml/min

3. Output Pressure: 0.4Mpa

4. Power: 180W

5. Dimension: 440mm x 210mm x 360mm

6. Net Weight: 14kg

Tags: Nitrogen generator for gas chromatography

Low Noise Air Pump EPA-2000/5000

Features

Equipped with a famous brand compressor which with the device to start at normal pressure;
Stainless steel gasholder

Technical Parameters

1. Output Flow Rate: 0-2000ml/min 0-5000/min

2. Output Pressure: 0.4Mpa

3. Power: 125W 150W

4. Dimension: 440mm x 210mm x 360mm

5. Noise: Less or equal 40db

6. Net Weight: 19kg

Air Compressor EPA-380A/580A

EPX-300/500(EPX-300B/500B Oil-free)Nitrogen Hydrogen Air Integrated Generator

Low Noise Air Pump EPA-2000/5000

Featured with Oil-free compressor

Technical Parameters

Output Flow Rate 0-3000/5000ml/min
Weight 27kg
Dimension 260mm x 360mm x 665mm
Power 560/600W

Tags: Air Compressor for gas chromatography

EPX-300/500(EPX-300B/500B Oil-free)Nitrogen Hydrogen Air Integrated Generator

1. Hydrogen Purity: 99.999%

2. Nitrogen Purity: O2 less or equal 3ppm

3. Output Flow Rate of Nitrogen: 0-300ml/min/0-500ml/min

4. Output Flow Rate of Hydrogen: 0-300ml/min; 0-500ml/min

5. Output Pressure: 0.4Mpa(N2/H2)

6. Air Flow Rate: 0-2000ml/min; 0-5000ml/min.

7. Air Pressure: 0.4Mpa

8. Power: 400W; 500W

9. Dimension: 500mm x 420mm x 420mm

10. Noise: Less or equal 40db

11. Net Weight: 42kg; 45kg

Tags: Gas generator for gas chromatography

PSA Nitrogen Generator EPN-300H/500H

EPX-300/500(EPX-300B/500B Oil-free)Nitrogen Hydrogen Air Integrated Generator

Features:

1. Safe and convenient.

2. Compact structure, take up very little laboratory space.

3. Nitrogen generator supply ideal ultra pure nitrogen for GC(Gas Chromatography), LC/MS(Liquid Chromatograph/Mass Spectroscopy ), and thermal analyzer.

4. Continuously generate ultra pure nitrogen through Pressure Swing Absorption (PSA) technology. No need to use inconvenient and dangerous high pressure nitrogen cylinders in laboratory.

Technical Parameters

1. Output flow: 0-300ml/min;

2. Output pressure: 0-0.4Mpa;

3. Purity: 99.999%

4. Consumption: less than 700W

Tags: PSA Nitrogen generator

Cost-effective Autosampler

Autosampler AS-8015 For liquid

Features

1.Simple structure, small footprint, light in weight.

2. Rotary injection mode does not occupy the injection port, also can manually inject.

3. Automated injection for 2 injection ports, has the function of double towers autosampler.

4. Enhance syringe cleaning mode, can add 2 solvents to clean before or after injection, maximum decrease cross-contamination of samples.

5. Internal standard substance injection technology.

6.Speedy injection, injection time less than 100ms.

7. Micro-volume injection, 0.5ul micro-syringe supported.

8. Injection depth is adjustable.

9. Can set variable injection mode(Injected by Hot Syringe, Injected by Cold Syringe, and Injected by Sandwich Syringe).

10. Injection speed and sample extraction adjustable, which is suitable for samples with different viscosity.

11. Computer-controlled software, network control technology, complied with FDA21 CFR PART 11.

12. Precision positioning and stepping motor, which to avoid a curved syringe.

Technical Parameters

1. Sample Quantity: Standard 15 sample bottles, max 20

2. Sample Bottle size: 2ml

3. Syringe Volume: 0.5ul, 1ul, 10ul, 25ul, 50ul, or 100ul(Standard 10ul)

4. Injection Volume: Minimum 0.1ul

5. Air Volume: Minimum 0.1ul

6. Extraction Speed: Can be set from 0.1-100ul/sec

7. Injection Speed: Can be set from 0.1-100ul/sec

8. Syringe Cleaning Program: Max can be set to repeat 15 times, four solvents.

9. Injection Mode: Repeated extraction, max 15 times.

10. Dual Injection Mode: High efficient injection: can inject two different samples to two injection port in turn.

11. Confirm injection: can automated inject same sample to two injection port in turn.

12. Viscosity Delay Can be set from 1 to 60sec

13. Internal Standard Substance Injection

Min injection volume can be 0.1ul

Min air volume can be 0.1ul

Can set airspace between sample and internal standard substance.

14. Program: 10 methods, can set sample extraction, injection, clean, min volume is 0.1ul, max 15 steps.

Workstation for Gas Chromatography

Desktop Computer F-X238

Features

Strong heat dissipation

large-area venting hole design, extremely fast cooling, excellent heat dissipation, no need to worry about heat dissipation.

Rich interface, more convenient

♦ 1080P HD visual experience(VGA+HD).

♦ Dual-frequency WIFI,2.4G/5GHz 802.11ac high-speed, measured download speed up to 20M/S, faster, more stable.

♦ Built-in 2 soundtrack stereo speakers, Stereo surround experience.

♦ USB 2.0 + USB 3.0,Fast transfer speed, more devices can be connected.

The all in one PC has a rotating lifting bracket.

♦ It can lift up and down(0-133mm)

♦ It can rotate clockwise or counter-clockwise 90º

♦ Horizontal rotation(-45°+45°)

♦ Looking up angle(-25°+5°)

Technical Parameter

Display: 23.8 inch blacklight frameless 1920*1080 Full HD screen

CPU: Core I3

Motherboard: Core I3

Memory: 1*SO-DIMM,1.35V DDR3 / 2*SO-DIMM,1.2V DDR4,Max 8GB

Storage: 1*SATA(2.5"),1*m-SATA / 1*SATA(2.5"),1*M.2(SATA/PCIE)

I/O ports: 1*HD,1*VGA,2*USB3.0,2*USB3.0,1*RJ45 gigabit lan,audio in/out or 1*HD,4*USB3.0,1*RJ45 lan,audio in/out.

WIFI: 802.11b/g/n(AC) Dual frequency

Graphic: integrated HD

Speaker: Built-in 2 channel stereo

Power supply: 110V-220V 90W/120W AC-DC Adapter

Dimension: 540*320*404mm

VESA: 100*100mm Support for lifting and lifting rotating base 45 degrees plus 45 degrees, support screen rotation 90 degrees plus 90 degrees.

Laser Printer A2400

Desktop Computer F-X238

Technical Parameters

Functions: Print only

Print speed: Black (normal, A4); Up to 24ppm

Resolution Black (normal): Up to 600x600 dpi

Cartridge number: 1 (black) Original Laser toner cartirgde~2200pages

Standard print languages: GDI

Display: LED

Control Panel: Buttons (Power, Cancel); LED indicator lights(Power, Toner, Attention)

First page out: Black (A4, ready): As fast as 8.3 seconds;

Paper handling: Input: 160-sheet input tray

Sizes (Supported): A4, B5, A5, LGL, LTR, EXEC, Envelope

Weight (Supported): 60-105g/m2

Electrical Specification

Rated Voltage: AC 220-240V

Rated Frequency: 50Hz~60Hz

Specification of Printer

Memory: 16M

Processor speed: 300M Hz

Compatible operating systems Windows xp, win7, win8/win8.1, win10(x86/x64)

Operating environment: Operating temperature range: +5 to 34 ℃, Operating humidity range: 10 to 80% RH(non-condensing)

Connectivity(standard): Hi-Speed USB 2.0 port

Dimension: 395mmx283mmx231mm

Weight: 6.50kg

What is a Gas Chromatography

GC-7860 Plus/B Gas Chromatography

Gas Chromatography Features

Gas Chromatography GC7860B

Gas Chromatography GC 7860B Keypad