No, ISO 17628 is not specifically a standard for Magnaflux examination. ISO 17628 is actually a standard related to non-destructive testing, specifically focusing on the use of liquid penetrant testing. Magnaflux is a brand that provides magnetic particle testing solutions, which is a different non-destructive testing method.
Liquid penetrant testing (which ISO 17628 covers) involves applying a liquid dye or fluorescent penetrant to the surface