Coating Quality Management (CQM) sensor is a robust, portable sensor designed in accordance with the ISO 16773-2 standard. It performs high-precision diagnostics on coating barrier performance and degradation—undetectable to the naked eye—using a non-destructive method known as Electrochemical Impedance Spectroscopy (EIS). Beyond simply detecting latent corrosion beneath the coating, CQM provides predictive data on corrosion initiation and progression rates, enabling proactive asset management.