Download or read book GB T 5097 2020 Translated English of Chinese Standard GB T 5097 2020 GBT5097 2020 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2022-12-02 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard specifies the control requirements for the viewing conditions of magnetic particle testing and penetrant testing, including the minimum requirements for the white light illuminance and ultraviolet irradiance and their measurement methods, which are applicable to the detection method of observing with the naked eye. This standard does not include requirements for the use of actinic blue light sources.