There's more down there! I hope it helps you! ! StandardNo.: GB/T 5413.16-1997 Standard Name: Folic acid (folate activity) in infant formula food and milk powder. Determination of folic acid (folic acid activity) in infant milk powder and formula food. Alternative situation: GB 54 13- 1985 Implementation date: 1998-9- 1 Promulgator: State Bureau of Technical Supervision Description: This standard specifies the method for determining folic acid (folic acid activity) by microbiological method. This standard is applicable to the determination of folic acid (folate activity) in infant formula food and milk powder. Source: /detail/67509.html Download:/upload/QY/yn/GB-T% 205413.16-19971.pdf.