The Original GazCal Chlorine Gas Generator

On-demand ppm chlorine gas generation from Spantech

The Original GazCal is a portable chlorine gas generator designed for the testing and calibration of gas detectors, particularly in safety systems and industrial environments.


Manufactured and serviced in the UK, GazCal provides low concentration chlorine gas on demand, removing the need for bottled chlorine gas while giving users a tough, practical and easy-to-use calibration solution.


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UK made, UK serviced, built for practical field use

GazCal generates low concentration chlorine gas for detector testing and calibration without the handling, storage and transport requirements associated with bottled chlorine gas.

Its rugged case design makes it suitable for demanding industrial use, while the portable format allows it to be carried easily between sites, workshops and service locations. The unit can be powered by mains or its internal rechargeable battery, making it suitable for both workshop and field applications.

Video technical support is also available by Zoom, FaceTime or Skype.

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Key benefits

  • Easy to use
  • Mains or battery powered
  • Tough and rugged
  • Easy to carry and transport
  • No bottled chlorine gas required
  • UK made and serviced

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GazCal specifications

SpecificationDetails
ppm range0.1 to 20 ppm
Versions availableHigh ppm and low ppm versions available at the same cost
Flow rate0.5 or 1.0 Lpm
Gas production techniqueElectrochemical
Cell lifeTypically 1 to 2 years, depending on use
PowerInternal rechargeable 12V battery
Recommended service interval12 to 24 months

GazCal servicing and recalibration

If your GazCal requires servicing or recalibration, please contact Spantech before sending your unit to us.

Once your unit arrives, we will inspect it and provide a quotation for recalibration and any corrective work required. After the quotation has been approved, our engineers will carry out the work and aim to dispatch the unit within 48 hours of approval, helping to keep downtime to a minimum.

Technical support for GazCal users

Spantech provides UK-based support for GazCal users, including guidance on operation, service requirements and recalibration. Remote video support is available where required, helping customers get practical advice without unnecessary delays.

Speak to Spantech about GazCal

For pricing, servicing, recalibration or technical support, contact Spantech Group today.

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