ESEGAS has successfully completed the delivery of two customized HF and VOC gas analyzers. They designed for a specialized laboratory rectification column application involving silicon tetrafluoride (SiF4) impurity analysis.

The ESEGAS team is responsible for the following in the project:
- One TDLAS-Based Online HF Analyzer (Range: 0–100 ppm)
- One VOC Gas Analyzer capable of simultaneously measuring: THC: 0–50 ppm, C2H6: 0–50 ppm, and C3H8: 0–50 ppm.

The sample gas originates from the hydrolysis process of SiF4. The gas analyzers creat a highly demanding analytical environment that requires excellent corrosion resistance, stability, and measurement accuracy. The laboratory rectification system install two HF and VOC gas analyzers. They can determine trace gas impurities in SiF₄, including hydrogen fluoride (HF), total hydrocarbons (THC), ethane (C2H6), and propane (C3H8).
To ensure long-term reliability when handling SiF₄-related process gases, both the HF and VOC gas analyzers feature specially customized stainless-steel internal gas-contact components. This design minimizes potential corrosion issues and helps maintain analytical performance under challenging operating conditions.
The online TDL HF analyzer utilizes Tunable Diode Laser Absorption Spectroscopy (TDLAS). TDLAS widely recognized for its high selectivity, fast response, and excellent suitability for corrosive gas monitoring applications. The VOC gas analyzer utilizes Gas Chromatography coupled with Flame Ionization Detection (GC-FID). It widely adopts for accurate VOC measurement in complex gas streams.
Before shipment, both HF and VOC gas analyzers successfully passed factory testing and performance verification. Comprehensive test reports were provided to the customer, demonstrating compliance with project specifications and ensuring confidence in field deployment.
This customized solution once again demonstrates ESEGAS’s capability to provide two tailored HF and VOC gas analyzers for advanced laboratory research applications. If you want to know more details about the HF and VOC gas analyzers, watch video on ESEGAS YouTube channel!





