Johnson & Allen are a British manufacturer of MPI and DPI Equipment for NDT. We design and manufacture standard and bespoke systems including dye penetrant lines, MPI bench units and power packs, UV lights, electromagnetic yokes and an extensive range of magnetic particle and dye penetrant consumable products.

We have been the market leaders in the supply of crack detection equipment and consumables for over 75 years with a wealth of experience in both MPI and DPI systems.

Johnson & Allen’s quality system is registered by BSI (FM09387 applies)