DPI Kits Our Dye Penetration Inspection (DPI) kits include the NDT consumables needed for reliable penetrant NDT testing.Please contact our team if you have any questions or queries. Relevance Price: Low - High Price: High - Low Alphabetically: A - Z Alphabetically: Z - A Johnson & Allen Dye Penetration Inspection (DPI) Kit Add to Quote Basket Magnaflux SK3 Solvent Removable Visible Penetrant Testing Kit Add to Quote Basket