EGABOX: TGA-GC/MS Coupling Interface for Evolved Gas Analysis (EGA)
Decouple TGA measurement time from GC-MS analysis time. Capture full reaction kinetics of rapid high-temperature reactions.
The EGA Challenge: Overcoming the GC-MS Time Constraint
Evolved gas analysis (EGA) during TGA runs or reactor monitoring often faces a hurdle: fast reactions versus lengthy GC-MS analysis times. The EGABOX interface eliminates this analytical bottleneck by automatically trapping key gas fractions at 200 °C. You can then analyze each sample sequentially, without losing track of your reaction kinetics.
Bridge the Gap Between TGA and GC-MS Analysis Time
In materials and polymer characterization, Gas Chromatography coupled with Mass Spectrometry (GC-MS) is the gold standard for qualitative and quantitative evolved gas analysis (EGA) duringThermal Gravimetric Analysis (TGA) runs..
In materials and polymer research, TGA (Thermogravimetric Analysis) is the standard for monitoring mass loss. Coupling these degradation steps with a detailed gas analysis (EGA) provides vital structural information. However, a major bottleneck exists:
However, a major timing conflict arises:
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A TGA cycle or rapid reaction typically lasts 10 to 30 minutes.
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A comprehensive chromatographic separation via GC or GC-MS requires 20 to 60 minutes.
How can you capture all degradation steps without missing a single gas fraction?
The interface EGABOX resolves this timing issue: it samples and stores evolved gases at high temperatures (up to 200 °C) in dedicated loops, at user-programmable intervals synchronized with mass losses or reaction steps. Each fraction is then automatically injected sequentially into your GC or GC-MS.
Why Choose EGABOX for Your TGA Couplings or Kinetic Processes?
Engineered for researchers and R&D teams, Chemlys’ EGABOX interface turns your GC-MS system into a powerful kinetic tracking tool. It interfaces directly with your reactors or thermal analyzers to capture the exact footprint of evolved gases during rapid reaction phases.
1. Repeatable Gas Sampling & Reliable Quantification
Every EGABOX undergoes rigorous factory validation. We guarantee exceptional loop-to-loop repeatability (RSD < 0.5% on GC peak areas). Each unit is delivered with its own qualification certificate.
2. User-Friendly Design & Flexibility
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Unconstrained Control: Embedded PLC with a license-free web interface. Access configuration from any web browser without third-party software installation.
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Disconnect Your GC in Under 5 Minutes: The heated transfer line (cold-spot free) disconnects rapidly, keeping your GC-MS available for routine analyses.
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Simplified maintenance: Direct valve access right under the front cover.
3. Sample Integrity & Safety
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Inert Passivation (SilcoNert® 2000 Option): Complete treatment of valves and transfer lines to prevent adsorption of reactive, sulfur-containing, or trace compounds.
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Gas safety: Inerting feature via purge gas in case of leak detection (ideal for hydrogen monitoring applications).
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Atmospheric Pressure Equalization (MPA Option): Ensures injection of perfectly repeatable sample volumes regardless of upstream pressure variations.
How It Works & Laboratory Integration
TGA / EGABOX Synchronization: Start your TGA run and EGABOX sequence simultaneously. Loops automatically capture gas fractions at target temperatures or mass-loss points.
Heated Storage: Gas fractions remain trapped at 200 °C without condensation or degradation.
Sequential Analysis: The PLC manages automated injections into the GC-MS split/splitless inlet at its own pace, providing complete reaction kinetics.
A Tailored Solution Engineered by Chemlys
At Chemlys, we do more than supply a sampling unit: we integrate the entire analytical chain (TGA, Transfer Line, EGABOX, GC-MS).
| Features | EGABOX specification |
| Sample Storage | Up to 16 heated storage loops |
| System temperature | Homogeneous heating up to 200 °C (no cold spots) |
| Tubing Passivation | Standard version or SilcoNert® 2000 (fully deactivated surfaces) |
| Sample Pressure & Regulation | Atmospheric Pressure Equalization (MPA option) before injection |
| Control & Software | Embedded PLC / Universal Web Interface (RJ45 Ethernet) |
| TGA / GC connection | Universal heated transfer lines with quick-disconnect system |
| Compatibility | Flexible mounting on either the left or right side of any commercial GC or GC-MS model. Compatible with all TGA analyzers on the market. |
EGABOX coupled with TGA and GC-MS SHIMADZU QP2020NX
