The test is non-destructive and only 1 sample is needed. We can test various sizes, from very small to very big. The preferred sample size is 100 mm x 100 mm or slightly smaller. The minimum sample size is 40 mm x 40 mm and the maximum sample size is 300 mm x 300 mm. It is still possible to test samples larger than 300 mm x 300 mm, but additional surcharge is applicable.