Moodle ZenDesk
For the AQM 65 and Dust Monitors we offer free online training.  For the handheld and fixed monitors we offer free online support and knowledge articles.


We support all our products currently running in the field. We also offer a recalibration service for all sensor heads. A multi-point calibration against NIST traceable standards will be performed and a new calibration certificate issued. Only the sensor head needs to be returned for recalibration.

If your instrument requires repair, servicing or recalibration please contact your local distributor who will be able to provide further assistance. Alternatively, please contact us with details of the instrument type, serial number and service required. We will issue an RMA (Return Material Authorisation) number and give you instructions on shipping the product to us.