Skip to main content

Positive Material Identification PMI

Home > Positive Material Identification PMI

Positive Material Identification

Positive material identification (PMI) is a process used to identify and verify the composition of a material. There are two main methods used for PMI: optical emission spectroscopy (OES) and X-ray fluorescence (XRF).

OES is a type of spectroscopy that uses an electric arc to excite a sample and measure the light emitted. This light is then analyzed to determine the elemental composition of the sample. OES is a fast and reliable method for PMI, and is often used for metals and other inorganic materials.

XRF is a type of spectroscopy that uses X-rays to excite a sample and measure the fluorescent radiation emitted. This radiation is then analyzed to determine the elemental composition of the sample. XRF is a fast and reliable method for PMI, and is often used for alloys, plastics, and other organic materials.

Overall, both OES and XRF are reliable methods for PMI, and can be used to accurately identify and verify the composition of a material. These methods are often used in industries such as aerospace, automotive, and medical, where the composition of materials must be known in order to ensure safety and quality.

Testimonials

“Test Inspect is our go-to company for non-destructive testing and welding inspection. We use them almost on a weekly basis for magnetic particle and visual on our Sellafield projects where a great deal of oversight is placed on the NDT and the quality of our welding and fabrication.”

Richard Tubman -Numech Managing Director

“My dealings with Test Inspect have been extremely easy due to their professional proactive working ethics. The service was very efficient and all of my expectations were met. I chose Test Inspect to carry out the works on my project as I have worked with Lee for many years and know that he and his team will always provide exactly what I require and to the highest standard. I would certainly recommend others utilising Test Inspect services.”

Callum Woodend WCELOperations Director

“Cheers Tony, and thanks again for your help. Great turnaround and service from Test Inspect,
Service Delivered - Sellafield Welder Qualification,
Turnaround Time - <24hrs”

John IrvingMechanical Quality Inspector

“Firstly I'd like to thank you both for your contribution to the last phase of work for RR SMR to help identify the benefits of digital image capture with gamma sources and the potential for reducing the working space envelope. Your assistance and expert knowledge was very much appreciated.
Service Delivered - Level 3 Radiography and Digital Radiography R&D”

Doug WylieTWI Ltd