Corr Science


Multi Gas Detector for VOCs


Firstcheck+ is the first ppb multi gas detector to combine volatile organic compound (VOC) detection with explosive gas (LEL) sensors. Its multi gas sensors detect oxygen, hydrogen sulphide, carbon monoxide and explosive gases, using a highly sensitive PID detector.

The FirstCheck+ handheld multi gas detector provides unrivalled resistance to humidity, due to its unique Fence Electrode Technology. The instrument’s PID capabilities have received independent verification as the most sensitive, accurate PID available.

FirstCheck+ accurately detects VOCs from 1 ppb to 10,000 ppm, a range unmatched by other multi gas detector. The FirstCheck+ multi gas detector enables the detection of many gases that are toxic at low ppb levels.

The Firstcheck+ gives rapid response at the scene of an accident or emergency enabling fast action to be taken. Firstcheck+ is the multi gas detector of choice for applications including emergency response, confined space entry, weapons of mass destruction and hazardous materials



  • Patented Fence Electrode Technology for humidity resistant operation
  • Inert flow path maximises response to heavy and reactive compounds
  • Detects VOCs from 1 ppb – 10,000 ppm
  • Multi-gas sensors for oxygen (O), hydrogen sulphide (H2S), carbon monoxide (CO) and explosive gases
  • Rapid response and recovery for fast detection
  • Intrinsically safe for use in flammable areas
  • Health & Safety mode for STEL and TWA
  • Large numerical back-lit display for easy viewing
  • Choice of readouts – numeric or real-time graph
  • Traceability – automatic, continuous data logging
  • Graphical interface and icon driven menu
  • Swift, simple data download via IRDA link
  • Fully interactive, easy-to-use Ion PC software for download, analysis and programmable features
  • Upgradeable throughout the FirstCheck range




The FirstCheck+ multi gas detector detects gases across a number of applications, including:

  • First Response
  • Confined Space Entry
  • HazMat
  • Industrial
  • Leak Detection / Fugitive Emissions



Firstcheck+ Manual V2.1

Firstcheck+ Manual V2.7