Pressure dye test

Leakage test in which a liquid containing a dye or fluorescent oil is driven by a pressure differential into the leak in the wall of the object to be tested and is then detected by a visual inspection on the other side
ISO 20484:2017(E)

Цветной (хроматический) метод (3.3.20) 

ГОСТ Р «Контроль неразрушающий. Течеискание. Термины и определения»