|Test Piece 2 according to EN ISO 3452-3
The EN ISO 3452-3 test piece is used for the routine assessment of fluorescent dye penetrants in environments where the penetrant could be susceptible to contamination and degradation.
The test piece consists of an austenitic base plate. One side of the piece comprises five different sized star-shaped cracks on a chromed background. Using this side of the test piece, it is possible to assess the relative sensitivity of a penetrant from one batch to another. The other side comprises four areas with differing levels of surface roughness; these areas can be used to make an assessment of the removeability of a penetrant during washing/cleaning.