ISO 1739 | IDF 7: 2006 - Butter - Determination of the refractive index of the fat (Reference method) Working Area - Food Standards ISO 5538 | IDF 113:

ISO 5538 | IDF 113: 2004 is intended to be used in all cases where attribute sampling plans are required for a dairy product

This standard specifies a combined method for the enumeration of presumptive Escherichia coli and of presumptive coliforms by means of a culture technique involving a liquid medium with MUG

Colony-count technique at 25°C

This publication has been revised and replace by the joint standard ISO/TS 27265 | IDF/RM 228: 2026

ISO 1739 | IDF 7: 2006 - Butter - Determination of the refractive index of the fat (Reference method) Working Area - Food Standards ISO 5538 | IDF 113:This standard specifies a reference method for the determination of the refractive index of the fat obtained by melting butter.