NBN EN 60522 : 1999

1 Scope and object
    1.1 Scope
    1.2 Object
2 Normative references
3 Terminology
    3.1 Degree of requirements
    3.2 Use of terms
    3.3 Defined terms
4 Measurement of permanent filtration
    4.1 General
    4.2 Test sample
    4.3 Generation of the x-ray beam for measurement
    4.4 Radiation detector
    4.5 Composition of reference materials
    4.6 Method of measurement
5 Indications and statements of permanent filtration
Annex A (normative) Terminology - Index of defined terms
Annex ZA (normative) Normative references to international
                      publications with their corresponding
                      European publications

Applicable to x-ray tube assemblies for medical diagnosis and radiotherapy.