Celtek specialises in the development, manufacture, calibration and sales of professional microwave power flux density test instruments used by personnel engaged in the maintenance of domestic and commercial microwave ovens. They are used to ensure the safety of personnel who use microwave-heating equipment with a potential to leak energy and cause harm. Operating in the UK, Celtek holds a major share of this market, offering instrument calibration traceable to UK National Standards and as such is recognised by leading microwave oven manufacturers.
Instruments have been manufactured and 'badged' for a number of leading instrument companies, within the UK and abroad.