2015YB/T 5339-2015 Ferrophosphorus.Determination of carbon content.The infrared absorption method
2006YB/T 5339-2006 Ferrophosphorus Chemical Analysis Method Infrared Absorption Method Determination of Carbon Content
YB/T 5339-2006 Ferrophosphorus Chemical Analysis Method Infrared Absorption Method Determination of Carbon Content has been changed from GB/T 8705.1-1988 Methods for chemical analysis of ferrophosphorus--The infrared absorption method for the determination of carbon content.