Capital NDT provides professional Magnetic Particle Inspection (MPI) services to support safe, reliable engineering across the UK. Also known as crack testing, Magnetic Particle Inspection is a widely used non-destructive testing method for identifying surface and near-surface defects in ferromagnetic materials such as steel and iron.

MPI is valued across sectors including construction, aerospace, automotive and power generation due to its speed, accuracy and cost-effectiveness. The method delivers immediate visual indications of defects such as cracks, laps, seams and inclusions, allowing issues to be identified and addressed before they develop into more serious problems.

Capital NDT offers both white contrast and ultraviolet Magnetic Particle Inspection techniques, making the service suitable for site-based work as well as controlled inspection environments. Testing can be carried out on-site nationwide using portable equipment or at the company’s fully equipped inspection facility in Colnbrook, near the M25, which also supports batch testing of larger components.

All inspections are performed by PCN-certified technicians in accordance with BS EN ISO 9712, ensuring consistent quality and compliance with recognised industry standards. With accredited facilities and experienced personnel, Capital NDT supports clients with dependable NDT solutions tailored to their operational requirements.