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NWSPEC

QGA-MS | Online Gas Mass Spectrometer for Catalysis, Fermentation & Fuel Cell

QGA-MS | Online Gas Mass Spectrometer for Catalysis, Fermentation & Fuel Cell

QGA-MS — Online Gas Analysis for Real-Time Process Control

The QGA-MS is a quadrupole mass spectrometer designed for continuous online gas analysis in industrial and research environments. From catalysis studies to fermentation monitoring, it delivers quantitative gas composition data with second-level time resolution — no chromatographic separation, no sample preparation, direct real-time measurement.

Applications include temperature-programmed desorption (TPD), bioreactor monitoring, fuel cell electrochemistry, environmental emissions testing, and chemical process control. Configurable mass range (1-300 u), detector options (Faraday/SEM/Dual), and heated sample lines (up to 300°C) adapt to diverse gas streams from light gases to heavy organics.

Key Specifications

  • Mass Range: 1-100 u (QGA-100), 1-200 u (QGA-200), 1-300 u (QGA-300)
  • Detector Options: Faraday cup (100% duty cycle), SEM (4×10⁻¹³ Pa limit), Dual mode (10 orders range)
  • Sample Line: Ambient to 150°C standard, 300°C high-temp option
  • Response Time: <1 second (typical), configurable for process dynamics
  • Detection Limit: ppb level (SEM), sub-ppm (Faraday)
  • Operating Pressure: 1 atm inlet, <10⁻⁴ Pa analyzer (turbomolecular pump)

Detector Comparison

Parameter Faraday Cup Electron Multiplier Dual Mode
Detection Limit ~1 ppm ~1 ppb (4×10⁻¹³ Pa) 1 ppb - 100% (auto-range)
Dynamic Range 10⁴ 10⁵ 10¹⁰ (10 orders)
Stability Excellent (no aging) Good (requires calibration) Excellent (auto-switching)
Duty Cycle 100% ~90% Variable
Cost Low Moderate Higher
Best For High concentration, long-term stability Trace analysis, fast response Research, wide concentration swings

Model Naming Convention

QGA-[XXX][Y]-[ZZ]
XXX Mass Range: 100, 200, or 300 (u)
Y Detector: F (Faraday), S (SEM), D (Dual)
ZZ Temperature: 15 (150°C) or 30 (300°C)
Examples: QGA-100F-15 (100u, Faraday, 150°C) | QGA-200S-30 (200u, SEM, 300°C) | QGA-300D-15 (300u, Dual, 150°C)

Configuration Selector

1
Mass Range [XXX]
100
Light gas analysis, process monitoring
1-100 u | H₂, He, N₂, O₂, CO, CO₂, CH₄
200
Intermediate mass, light VOCs
1-200 u | Hydrocarbons, solvents, CFCs
300
Heavy organics, comprehensive
1-300 u | Complex organics, polymers, fuels
2
Detector [Y]
F — Faraday Cup
Robust, cost-effective, high concentration
100% duty cycle | No aging | ~1 ppm limit
S — Electron Multiplier
High sensitivity trace analysis
4×10⁻¹³ Pa | ppb level | Fast response
D — Dual Mode
Automatic switching, research grade
10 orders range | Auto-switching | Wide dynamic
3
Sample Line Temperature [ZZ]
15 — Standard 150°C
General purpose, air-sensitive samples
Ambient-150°C | General gases
30 — High Temp 300°C
Heavy hydrocarbons, condensable vapors
Ambient-300°C | Catalysis, heavy fuels
4
Application
Catalysis & TPD
Thermal, electrical, photocatalytic reactions
Real-time reaction monitoring
Fuel Cell & Battery
Exhaust gas and electrochemical analysis
H₂ purity, CO poisoning detection
Fermentation
Bioreactor off-gas monitoring
O₂, CO₂, N₂, H₂, CH₄, ethanol
Energy Storage
Battery and material gas evolution
Li-ion, Na-ion, solid-state batteries
Thermal Analysis
TG-MS and DSC-MS coupling
Decomposition gas analysis
Combustion
Emissions and flue gas monitoring
NOx, SOx, CO, CO₂, hydrocarbons
Configuration Status
QGA-XXX-Y-ZZ
Complete all 4 steps to generate your QGA-MS configuration
0 of 4 steps completed
Mass Range [XXX] —
Detector [Y] —
Temperature [ZZ] —
Application —

Configure Your QGA-MS System

Select mass range, detector, sample line, and application for customized quotation.

 

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Since 1993 30+ Years of Instrument Expertise
Reliable Manufacturer Manufacturing & Services
Ph.D. Founded Dr. Pingxin Wang, UT Austin
Advantages Price · Service · Speed · Technical · Data
Fast Shipping In-Stock Orders Ship Same Day

Frequently Asked Questions

How can I contact you?

Feel free to call us T+86 189-6516-4839
or email  sales@nwspec.com to:

• Place an order
• Ask for a quote
• Or if you have any other questions

You will always get a live person here at NWSPEC; never an automated system! 

We are open from 6:00AM - 7:00PM Eastern Time, Monday - Friday. 

Where can I find application notes?

If you have any questions regarding the application notes, or can't find the one you are looking for, please contact Sales at sales@nwspec.com



Do you have instructional manuals for your instruments to download?

Yes, we have instructional manuals for our instruments. They can be found on https://nwspec.com/pages/resource .

If you don't see the one you are looking for, please contact: sales@nwspec.com



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