Neocol Works Smithfield Sheffield S3 7AR
0114 273 8066
Established over 80 years ago Johnson & Allen Ltd is an established company in the Magnetic Particle Inspection (MPI) and Dye Penetrant Inspection (DPI) industry. With a wealth of experience, Johnson & Allen are a market leader in both the design and manufacture of standard and bespoke Non-Destructive Testing (NDT) solutions. Our bespoke solutions are all designed and built in-house within the ‘Steel City’ of Sheffield, UK. Johnson & Allen also manufacture and supply a range of quality chemical consumable products which includes magnetic inks, contrast paints, dye penetrants, developers and cleaners. The company has over 45 years’ experience in manufacturing aerosol consumables and over 80 years in bulk consumables. High quality and reliable NDT is essential for verifying the integrity of critical parts, steels and structures – And Johnson & Allen offers the complete package.