This part of ISO 8196|IDF 128 specifies a protocol for the evaluation and validation of alternative quantitative methods of milk analysis.

The protocol is applicable to all milk components including somatic cells. For microbiological parameters other standards, such as ISO 16140^[5], apply. This part of ISO 8196|IDF 128 is also applicable to the validation of new alternative methods where a limited number of analysts does not allow the organization of an interlaboratory study and ISO 8196‑1|IDF 128‑1, therefore, does not apply.

This part of ISO 8196|IDF 128 also establishes general principles of a procedure for granting international approvals of these alternative methods. These principles are based on the validation protocol defined in this part of ISO 8196|IDF 128.