CASES
Kore KRGC-MEOH 203 Gas Chromatograph for Methanol Purity and Impurity Analysis
The gas chromatograph for methanol purity and impurity analysis is a dedicated GC system designed for coal‑chemical, fine‑chemical, and solvent‑production enterprises. It is primarily used for the qualitative and quantitative analysis of key components in industrial methanol, purified methanol, and chemical solvents, including methanol content, ethanol, acetone, aldehydes and ketones, and organic impurities.
Applicable samples include industrial-grade methanol, refined methanol, recycled methanol, chemical solvents, and alcohol-based raw materials. Analytical parameters encompass methanol purity, ethanol, acetone, methyl formate, dimethyl ether, aldehyde and ketone impurities, as well as volatile organic impurities.
Applicable Standards / Methodology basis
GB/T 46434-2025 “Determination of Methanol Purity and Trace Organic Impurities—Gas Chromatographic Method” (effective May 1, 2026)
GB/T 338-2025 “Methanol for Industrial Use” (effective May 1, 2026)
Product Features
1. Dedicated configuration for methanol purity and impurity analysis
The system can be configured with appropriate detectors, injection systems, and chromatographic columns based on the required analysis of methanol purity and its impurities. To ensure the instrument’s reproducibility and stability, it is equipped with a high-precision electronic pressure control (EPC) system and an autosampler.
2. Stable separation performance
Through extensive experimental effort, we can select suitable dedicated chromatographic columns and optimize method conditions for our clients, enabling effective separation of target analytes from interfering compounds and improving analytical results.
3. Verified by the market, it meets the requirements of the national standard GB/T 46434-2025, “Determination of Methanol Purity and Trace Organic Impurities—Gas Chromatographic Method.”
4. Ultra-high sensitivity, meeting the detection limit requirements for impurities specified in the national standard GB/T 46434-2025, “Determination of Methanol Purity and Trace Organic Impurities—Gas Chromatographic Method.”
5. Convenient data processing and report generation
The data workstation supports spectral acquisition, peak identification, integration, quantitative analysis, and report generation, facilitating laboratory data management.
6. Includes a complimentary analytical method that is easy to use. It has already been pre-configured. Analysis Conditions and Plan Users simply click “Start Analysis” on the workstation, and the entire process runs automatically.
This system is applicable to:
- Quality Control of Methanol Products in Coal Chemical Enterprises
- Solvent Purity Testing for Fine Chemical Enterprises
- Factory inspection by methanol producers
- Analysis of methanol-based samples by a third-party testing laboratory
- Method development in research institutes and laboratories
- Corporate internal control standards and incoming material acceptance testing
Instrument Configuration
- Gas chromatography instrument: KR-LGS 2032
- Detector: FID
- Sample injection system: KR liquid autosampler (19 positions)
- Chromatographic column: A polar capillary column suitable for the separation of alcohols, ketones, esters, and light‑weight components.
- Data Workstation: Supports data acquisition, peak area integration, external standard/normalization method quantification, and report generation.
- Gas supply system: nitrogen, hydrogen, air
- EPC electronic flow control (carrier gas, hydrogen, air)
Main Technical Parameters
Instrument dimensions: KR-LGS 2032: Length 645 (including valve box) × Width 475 × Height 525 (mm)
Carrier gas system:
- All-digital electronic pressure control (EPC) with selectable pressure accuracy of 0.01 psi / 0.001 psi
- Carrier Gas Saving Mode: Supports automatic standby switching and automatically reduces carrier gas consumption upon completion of analysis, effectively lowering operating costs.
Injection system:
- Compatible with single-tower/dual-tower liquid autosamplers
Temperature Control System:
- Large-capacity column oven: Column oven dimensions ≥ 28 × 30 × 18 cm, capable of accommodating multiple chromatographic columns.
- Temperature control range: 30°C to 400°C, with a temperature control accuracy of ±0.1°C
- 16-step or 32-step temperature programming
- Cooling rate: 400°C → 50°C in 10 minutes as standard; a rapid cooling module is available as an option, reducing the time to 4 minutes.
Detector:
FID hydrogen flame ionization detector
Detection limit < 0.3 pg carbon/s (calculated as n-tridecane)
Linear range: >10⁷
Noise: ≤2×10⁻¹⁴ A/min
Drift: ≤1×10⁻¹³ A/30 min
Stability:
Qualitative RSD repeatability ≤ 0.1%
Quantitative RSD repeatability ≤ 2%
Product Advantages
- Method development for the analysis of methanol purity and organic impurities, suitable for routine quality control in industrial settings.
- Detectors such as FID and TCD can be selected according to the analysis method, meeting the requirements of different component analyses.
- Supports automated sample injection, enhancing the efficiency of batch analysis and improving injection reproducibility.
- Standard curve, area normalization, or internal standard quantification methods can be established.
- Supports test report generation and data traceability, facilitating laboratory management.
- Method optimization can be performed in accordance with national standards, industry standards, or enterprise internal control standards.
Delivery and Services
We can provide:
- Instrument Configuration and Selection
- Establishment of the detection method
- Installation and commissioning
- Standard sample / Actual sample testing
- Operational Training
- Method validation support
- After-sales maintenance and technical support
Online Inquiry
Learn more about our products
Online Inquiry
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Contact Us
After-sales service phone number：
+86 13904950125 +86 13364112972
Technical consultant contact information:
Instrument sales contact:
Wang Wei: +86 13904950160 (Shaanxi, Sichuan, Gansu, Ningxia, Qinghai, Yunnan, Chongqing, Guizhou, Guangxi)
(Shanxi, Inner Mongolia, Liaoning, Jilin, Heilongjiang，Hebei)
Yu Zixuan: +86 13904952011 (Xinjiang)
Huang Wei: +86 13842501881 (Zhejiang, Shanghai, Jiangsu, Fujian, Jiangxi, Guangdong，Shandong)
Yuan Xulin: +86 13704956101 (Shaanxi, Sichuan, Gansu, Ningxia, Qinghai, Yunnan, Chongqing, Guizhou, Guangxi)
National consumables sales Manager Liu：
Add:1F-6F,East SideBuilding 9Instrument Indus stry Baselingang Industrial Park Dandong,Liaon ning.
After Sales
Official account