Guidance

MCERTS: performance standards and test procedures for automatic isokinetic samplers

Guidance on the performance standards for automatic isokinetic samplers used in the measurement of emissions from industrial chimney stacks, flues and ducts.

• From: Environment Agency
• Published: 7 April 2014
• Last updated: 4 September 2025
  Show all updates

  1. 4 September 2025

     The PDF version of this guidance has been replaced with a new HTML format to improve accessibility and user experience. The minimum velocity range to be tested has been increased from 2 to 20 m/s to 2 to 30 m/s. Short-term isokinetic samplers have been removed from the guidance. References have been updated to the current standard for velocity and volume flow rate. Information has been added on IP ratings, temperature operating ranges and supply voltage tolerance. Contact information for the Environment Agency has been updated to the general enquiries email address.

  2. 20 September 2016

     Contact details have been updated.

  3. 7 April 2014

     First published.

Applies to England

Documents

MCERTS: performance standards and test procedures for automatic isokinetic samplers

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Details

The Environment Agency set up its Monitoring Certification Scheme (MCERTS) to provide guidelines on the standards you need to meet to monitor emissions that affect the environment.

This guidance is for:

• manufacturers of automatic isokinetic samplers, who need to know what standards to meet to be able to sell their equipment in the UK
• test laboratories who carry out testing of equipment on behalf of manufacturers to see if it meets the required standard