Penetrant testing

Applus+ RTD penetrant testing uses liquid (dye) as an NDT technique to identify surface defects in assets and equipment

Identifying surface cracks in castings, forgings and welds that are not visible to the human eye often appear; if these cracks remain undetected, they can potentially lead to major integrity problems and loss of production.

Our solution

Applus+ RTD Penetrant testing can be used in almost any situation with any material to detect surface defects. Penetrant dye liquid is applied to materials after cleaning in order to clearly highlight defects.


Applus+ RTD penetrant testing can be applied to any size or shape of asset or equipment in almost any location. With a ‘penetrant street’, large quantities of small objects can be tested simultaneously, with no loss of accuracy while achieving significant time and cost savings.

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