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Siloxane Analyzer (GC-IMS-SILOX)

Excellent sensitivity for every siloxane species, without matrix interferences

Available for Download

The GC-IMS-SILOX is a stand-alone device developed for user-friendly and reliable on-site siloxanes measurements in biogas, landfill, sewage gas, and digestors. The device has a straightforward single-click menu and can alternatively be run as an online monitoring system, automatically testing the gas in user-defined intervals. Results are stored on its flash memory and shown on the 6.4″ touchscreen, or the ‘Total Si’ value is transferred via 4–20mA or MODBUS (TCP). 

Besides power, the GC-IMS SILOX only needs N2 or synthetic air as drift and carrier gas for operation. Its user-friendly menu allows for a non-specialist to operate the instrument. Alternatively, it can be used as an online/continuous monitor at set intervals running 24/7.

Product Details

Siloxane Analyzer (GC-IMS-SILOX) Features

  • User-friendly, one-click menu allows for operation of the system without a specialist
  • Low detection limits (µg/m3) with ‘total silica’ (SiO2) and ‘total silicon’ (Si) results
  • High accuracy
  • Standard ranges available: Low: Single siloxanes (L2–L5, D3–D5): 0.03–2mg/m3 and ‘Total Si‘: 0.1–5.0mg/m3 High: Single siloxanes (L2–L5, D3–D5): 0.1–5mg/m3* and ‘Total Si’: 0.4–12mg/m3
  • Adjustable alarm settings
  • Compact design
  • Now supported by a published ASTM Standard D8455


µTD GC-IMS Thermo-Desorber
  • Automated analyte absorption and thermal desorption unit (µTD)
  • The micro TD preconcentrates the sample before injecting into BreathSpec to gain more compounds from the breath (see final image)
  • On-site sub-ppb detection of volatiles
  • Spatial combination of sampling onto adsorption tubes and thermal desorption with subsequent analysis on-site
  • Improved sensitivity due to analyte enrichment on adsorption trap

Siloxane Analyzer (GC-IMS-SILOX) Technical Specifications

Specifications Values
Separation I Retention Time
Gas Chromatograph (GC) Isotherm (< 80 °C)
Capillary Column 30 m
Separation II Drift time
Ion Mobility Spectrometer (TOF-IMS)
Ionization ß-radiation - 3H
Activity 300 MBq, below the exemption limit of 1 GBq acc. to EURATOM guideline
Detection Electrometer
Ion Mobility Spectrometer
LoD for Siloxanes one digit ppb
Typical Range for Siloxanes 0.03 – 5.0 mg/m3
Pneumatics 2 Electronic Pressure Controler (EPC) for flow stability and GC ramping
Sampling Ambient pressure
Firmware controlled pump plus heated electrical
Liquid trap (condensation water) optional
Requirement Purge Gas Nitrogen: Quality 5.0 (cylinder or generator)
Operation Manual: Touch-screen 6.4 " TFT Remote test on-line: User defined intervals
Data Storage (internal) Flash memory 16 GB
Data Output USB
4 – 20mA
Temperature Operation 0 – 40 °C
Moisture up to 95 % non condensating
Power Range 100 – 240 V AC, 50 – 60 Hz
Power Consumption < 200 Watt
Dimensions 449 x 435 x 177 mm (W x D x H)
Weight 15.5 kg or 34.2 lb
Housing 19", IP 20 enclosure, CE Marking

Typical Applications for Siloxane Analyzer (GC-IMS-SILOX)

  • Wastewater Treatment Plants
  • RNG Interconnection Rules Compliance
  • Landfills
  • Dairy Farms
  • Hog and Pig Farms
  • Food Waste Digesters (co-digestion)
  • Others

Available Measurements for Siloxane Analyzer (GC-IMS-SILOX)

  • Siloxanes

Related Products

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