As of the 20th May 2018 New MOT emissions limits for some Diesel vehicles will come into effect.
You are advised by the DVSA to contact the equipment manufacturer or calibration engineer of your emissions analyser, to discuss the update procedures for your equipment. Please be aware that some older units may not support the new updates and may need to be upgraded.
Please follow the link to the MOT Special Notice 7-17 from the DVSA.