ISO 9934-3:2015 describes three types of equipment for magnetic particle testing: - portable or transportable equipment; - fixed installations; - specialized testing systems for testing components on a continuous basis, comprising a series of processing stations placed in sequence to form a process line. Equipment for magnetizing, demagnetizing, illumination, measurement, and monitoring are also described. This part of ISO 9934 specifies the properties to be provided by the equipment supplier, minimum requirements for application and the method of measuring certain parameters. Where appropriate, measuring and calibration requirements and in-service checks are also specified.