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MPI vs DPT/FPI: The Complete NDT Inspector's Field Guide | Magnetic Particle & Dye Penetrant Testing Trinity NDT Field Guide · MPI & DPT/FPI The Questions Every NDT Inspector Asks — Finally Answered A comprehensive, technically-rigorous deep-dive into Magnetic Particle Inspection (MPI) and Dye Penetrant / Fluorescent Penetrant Inspection (DPT/FPI) — covering every question that goes unanswered in forums. Non-Destructive Testing Weld & Component Inspection ASTM / ASME / ISO Aligned Updated June 2026 Jump to 01 Fundamentals 02 Which Method? 03 MPI Deep Dive 04 DPT Deep Dive 05 Indications 06 Temperature 07 Demagnetization 08 Certification 09 Quick FAQ Walk into any NDT forum — ndt.net, LinkedIn groups, Reddit's r/NDT, or the ASNT community boards — and you'll find the same questions repeated, often wi...

  Magnetic Particle Inspection MPI Testing - Trinity NDT Bangalore India Magnetic Particle Inspection MPI Testing is a primary means of ensuring the defect free engineering components for critical mechanical engineering applications. There are various MPI techniques that can be applied to varied applications. In this image, the magnetic particle inspection MPI/testing has been carried out using Stationery Bench type MPI Equipment that meets to Aerospace NDT standard ASTM E 1444 Central conductor technique, DC current, Wet fluorescent magnaflux make MPI powder, black light intensity of more than 2000microwatt.cmsq. The technique identified severe cracks on OD of the ring components. The concentration of particles are maintained between 0.2 to 0.4ml/100ml. To know more about the NDT facilities log on to our facebook page: www.facebook.com/trinityndt.in   or visit Trinity NDT website: www.trinityndt.com