Semi-automatic gas monitors are widely used to measure ambient air in industrial, urban and rural environments. The monitors used in these applications require regular calibration and the measurements performed require careful quality assurance in order to provide valid results.

NPL is able to perform regular, or one-off calibrations of all types of monitor used for ambient air quality and emission measurements. This work can either be carried out on site or by sending the monitors to NPL.

Monitoring capabilities that can be calibrated by NPL include:

• NO_x
• Hydrocarbons
• SO₂
• Ozone
• CO
• Particulates (PM₁₀)
• Wind (speed and direction)

If you would like further information please complete the form.