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CASOrganic's luminophores collection has many compounds for capillary, magneto-powder and gas-luminescent fault detection with various disclosive ability for detection the surface, undersurface and through-surface defects in metal, ceramic, plastic and other tools.

The surface cracks are often impossible to detect with the naked eye, and using optical instruments is not sufficiently reliable because, on the one hand, there is lack of necessary contrast between the defect and its background and, on the other, these instruments bring into view only a small part of the surface under inspection. Furthermore, the optical method cannot be used in mass production. Application of luminescence flaw detection techniques makes it possible to considerably enhance the contrast of cracks and detect defects through the use of an indicator substance luminescing brightly against the non-luminescent background provided by the surface being inspected.

Luminescence Flow Detection (LFD) is one of the most effective, simplest and inexpensive methods of the non-destructive technique (NDT) for inspecting the cracks and other surface and under-surface defects in articles made of various materials such as metals, semiconductors, dielectrics, plastics, ceramics, glasses, etc.

Luminescent dye penetrant technique is used primarily for detecting surface cracks in articles made of any materials.

Magnetic-luminescence technique is used for detecting flaws in ferromagnetic materials only.

Gas-luminescence technique is used for detecting through-hole cracks in hermeticity tests.

LFD allows to disclosure the cracks in range of the 0.1–100 mm width. Materials with a different disclosure ability within this range are developed.