Manufacturer: Ion Science
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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.

Key Features

  • 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, hydrogen sulphide, carbon monoxide 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

Intrinsically Safe Approvals

  • II2 G Baseefa 03ATEX0742
  • Ex iad IIC T4 (-20o C ? Ta ? 60o C)
  • IECEx BAS 04.0033 (world standard)


  • ± 5% displayed reading at calibration point


  • ± 5%

Data Logging

  • Automatically recording all 5 sensors every second including date and time stamp
  • 8 Mb (expandable) data memory
  • Incorporates a secure storage algorithm to reduce stored data corruption


  • Via calibration kit accessory


  • Dry Cell: Alkaline 4 x AA:11 hours


  • Flashing LED
  • 90 dBA (10cm) audible sounder
  • User set and TWA & STEL
  • Pre-programmed 450+ gases and gas mixtures

Flow Rate

  • 220 ml/min or 220 cc/min with flow fail alarm


  • Operating: -20o to 60o C, -4 to 140o F


  • 0-99% RH (non-condensing)


  • Instrument without probe: 340 x 60 x 49 mm (13.5 x 2.3 x 1.9”)
  • Standard case: 420 x 320 x 97 mm (16.5 x 12.5 x 3.8”)


  • Instrument: 0.615 kg (1.36 lb)
  • Packed: 3.045 kg (6.7 lb)


  • PID specifications relate to an isobutylene 100 ppm in air calibration at 200o C and 90% RH; LEL specifications relate to a methane calibration
  • Other gases available on request
  • Other gas sensors as specified at appropriate international alarm standards

Gas Range

  • VOCs 0.1 – 10,000 ppm
  • 1 ppb – 10,000 ppm
  • O2 0 – 28%
  • CO 1 – 1000 ppm
  • H2S 0.1 – 100 ppm
  • LEL 0 – 100% LEL
*Assuming constant environmental conditions

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