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Calibration gas 4-gas mixture for bump testing, 60 litre

Dräger calibration gas containing a four-component mixture of hydrogen sulphide, carbon monoxide, methane and oxygen in nitrogen, in a 60 litre disposable cylinder at 35 bar – for bump testing and calibrating four-gas confined space monitors in a single operation.

  • A bump test is what makes a reading defensible – a gas detector that has not seen test gas since its last service is an assumption, not a measurement, and most confined space procedures require the check to be recorded before entry.
  • Certified mixture with a stated shelf life – each cylinder carries its composition and expiry date, so the calibration record can be traced back to a known reference.
  • 60 litre cylinder at 35 bar – the standard Dräger disposable format, sized for routine testing in the workshop or the calibration station.
  • All four channels from one cylinder – a standard four-gas monitor can be spanned in one operation instead of four, which is the difference between a routine that gets done and one that gets skipped.

Also required for measurement

  • A pressure regulator or demand flow regulator suitable for this cylinder – the cylinder is supplied without one, and the regulator must match both the valve and the flow rate your instrument or test adapter needs.
  • A bump test adapter or calibration cradle for the instrument being tested.

Important information before use

  • Observe the expiry date printed on the cylinder; the stated accuracy of the mixture is not maintained beyond it.
  • Store and transport the cylinder upright, below 50 °C and out of direct sunlight, and vent it before disposal in line with local regulations.