Author Archives: metlchek

People Who Really Work at NDT

This issue of the Penetrant Professor is slightly different than earlier issues. Taking a lead from ASNT’s publication “The NDT Technician” and it’s feature “Practitioner Profile”, the professor thought it would be of interest to share an e-mail received from some one who is very into his profession of NDT...

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What about inspecting equipment used in food preparation?

Met-L-Chek has customers who are in the business of processing food, including many dairies. These customers are regular users of penetrants in the maintenance of their processing equipment. Yet we frequently get questions from others who process food as to whether we have penetrant products that are approved for use...

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The Business of Running Lab Samples

Which Foot Is The Shoe On? One of the exciting things about being in the business of manufacturing inspection penetrants occurs at the beginning of each month. That is when many penetrant users send in their samples for our Pen-Chek® evaluation, so that they meet the requirements of ASTM E-1417...

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FWP-931A Water Containing Penetrant is Approved

Something New and Green Met-L-Chek is pleased to announce that it has AMS-2644 approval for it’s newest penetrant FWP-931A. This is a Type 1 (fluorescent) Method A (water washable) Sensitivity Level 1 penetrant. What makes this news worthy is that this is a water based penetrant not based on petroleum...

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Indication Brightness

Indication Brightness In the last issue of this newsletter, we discussed the work being done at Iowa State University with regard to penetrant inspection. To  reiterate the place where you can get all of the detailed information presented at the Spring ASNT meeting, go to www.cnde.iastate.edu/faa-casr/fpi/ Once at this site,...

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Rolls Royce RPS 702 – Approved for use materials

RPS 702 We just received a copy of Rolls-Royce specification RPS 702 that has several points worth comments as concerns materials that are approved for use. Under paragraph 2.5.1.1, certain materials listed on AMS-2644  are The Penetrant Professor now specifically listed as approved. This will make things easier for many...

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Refractometers

George Orwell wrote a wonderful story entitled “Animal Farm”, in which one of the classic events was the posting of a sign that read, “All animals are equal, but some are more equal than  others.” It turns out that with regard to the testing of emulsifier strength, like in the...

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What One Needs to Know to Perform a Quality Penetrant Inspection!

One of the services that Met-LChek provides to the NDT community is the writing, updating and editing of the various specifications and procedures related to penetrant inspection. This includes the ASNT Penetrant Handbook, which is presently undergoing updating. While reviewing the text that has been proposed, we were struck by...

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