Gas Chromatograph Mass Spectrometer DW-GCMS-II

DW-GCMS-II is a cost-effective gas chromatograph mass spectrometer provided by Drawell. The products hold several patented technologies, and are widely used in industrial inspection, food hygiene, environmental protection, etc.

  • High performance, high reliability
  • Low cost for customers of all types
  • Holding multiple patents

Applications of Gas Chromatograph Mass Spectrometer DW-GCMS-II

Brominated flame-retardant (BFR), volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs), phthalate, etc.

application of Gas Chromatograph Mass Spectrometer DW-GCMS-II

Features of Gas Chromatograph Mass Spectrometer DW-GCMS-II

  1. Superior quality: it uses high-end core parts, which ensures DW-GCMS-II high quality.
  2. Meeting high demands: provides necessity parts, and meets multiple requirements from different client.
  3. User-friendly design: it facilitates easy operation and convenient maintenance.
  4. High-efficiency ionization source: modularization design, having high ionization efficiency, and enhancing sensitivity.
  5. ChemAnalyst software: convenient operation, data acquisition and processing.
  6. Highly cost-effective: offering more benefits while meeting all application demands.
  7. Scientific solutions: Drawell offer customers perfectly customized solutions.
  8. Consumables with favorable price: most consumables and parts are self-developed, which save a lot of maintenance cost, while providing high performance.
  9. Satisfactory post-sale service: Drawell make a quick response to client’s demands, with professional technicians offering 24-hour services.

Highlights of Gas Chromatograph Mass Spectrometer DW-GCMS-II


  • Electronic pressure/flow control system (EPC/EFC) for self-developed GC 6800 system
  • Patented El filament set provides highly efficient electron emission, a maximum of 350u A
  • Quality mass analyzer with pre-filter reduces quadrupole pollution
  • High-energy dynode electron multiplier ensures good sensitivity
  • Vacuum system with quality mechanical and turbo molecular pumps guarantees stability and reliability
  • Full scale gauges monitor vacuum states in real time
  • Self protection system guarantees safety of operators and core parts under abnormal conditions
  • RF power supply digital compensation technology ensures better sensitivity and resolution in full mass range


  • The software “ChemAnalyst” controls auto sampler (AS), gas chromatograph (GC) and mass spectrometer (MS); data are acquired and transferred by high-speed network card
  • Full Scan and selective Ion Monitoring (SIM) modes are available
  • The system supports manual and automatic tuning, display of total ion current (TIC) and mass chromatogram (MC)
  • The data processing section searches target compounds in NIST 2011 based on mass spectra of samples, displays search results which include retention times, structural formula and standard mass spectra, and compares the abundances of standard and real target ions.
  • Users can make accurate qualitative and quantitative analysis.

Technical Parameters of Gas Chromatograph Mass Spectrometer DW-GCMS-II

GC Specifications
Inlet temperatureMax. 450°C
Pressure range0~100psi,±0.002psi
Pressure control modeElectronic pressure control (EPC), support CV and CC
Split modeSplit/splitless, max. split ratio: 1000:1
Column oven working temperatureRoom temperature+4°C~450°C
Heating rateUp to 120°C/min
Temperature programming7 stages/ 8 platforms
Auto SamplerOptional
MS Specifications
EI source ionization energy5W 〜250,V (Adjustable)
Mass range1.5~1000amu
ResolutionUnit resolution (full width at half maximum)
Ion source temperature100 〜3500
Filament emission current0-350 μA
GC-MS Interface temperatureMax. 450°C
Stability±0.10 amu/48 hrs
SensitivityFull scan, 1 pg OFN at m/z 272 with S/N ≥30:1 (RMS)
Scan rateUp to l000amu/s
VacuumTurbo molecular pump(67L/s)
DetectorHigh energy dynode electron multiplier