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The smart environmental gascromatograph:
unique, reliable and versatile
for innovative and effiecient monitorings


PyxisGC BTEX is the first “carrier-gas free” gas chromatograph that allows you to remotely monitor BTEX (Benzene, Toluene, Ethylbenzene, and Xylene) in ambient air, in compliance with the EN14662-3:2015 standard. The instrument does not need gas cylinders since the carrier gas is ambient air, allowing installation in any contest without needing staff or additional gas cylinders.

Pyxis GC BTEX combines the Micro-Electro-Mechanical (MEMS) System of microfluidics for the selective pre-concentration and the gaschromatographic separation, with the peak quantification given by the Miniaturized Photoionization Detector (PID).

The BTEX present in the gas sample are physically separated using a micro column chip (proprietary technology). Pyxis GC is also equipped with an auto-check system to verify and eventually correct the instrumental drift, in the long run, guaranteeing data quality. These characteristics allowed bringing to the field the same analytical quality of the lab instruments.

Pyxis GC BTEX is also easy to move, enabling monitoring in every condition: fixed network, on-the-go analysis, emergency events, and focused hot spot campaigns

Data storage

Internal 16 GB flash memroy 16 GB (runtime up to 7 years of continuous measurements)

Power consumption

Max. 25W

Carrier gas

ambient air, <10 sccm


ultra-sensitive PID, Photo Ionization Detector (10.6 eV)

Analysed Gasses

Benzene, Toluene, Ethylbenzene, Xylenes (other gases on request)

Analytical range
  • “Smart City”version: 0,05 – 40 ppb (0,16 – 132 μg/m3) benzene with 10 min analysis cycles
  • “Fence Line” version: 0,1 – 80 ppb (0,32 – 264 μg/m3) benzene with 10 min analysis cycles
Lower Detection Limit

<0,03 μg/m3 (0,01ppb) of benzene

Communication interfaces

Ethernet, Wi-Fi, 4G

Instrument control and data access
  • Local WebServer, accessible by the most common web browser (IE, Firefox, Chrome)
  • MODBUS on TCP server, API
  • “Pollution Guardian“ IoT Service
Power supply

220v max. 2.5A (UPS and 24V battery version; no UPS and no 12V battery version)

Operating Temperature

from -40°C to 50°C


420mm x 620mm x 210mm

Weight (according to the model)

W0E 11,5 Kg / WCE (auto-calib) 13 Kg / WBE (UPS) 17,5 Kg / WEE (auto-calib+UPS) 19 Kg

Environment & Safety
microGC, PID, GC
C6H6, C7H8, (CH3)2C6H4, (C2H5)C6H5