This part of ISO 6353 gives specifications and indicates the test methods to be used for checking conformity with these specifications for a second series of reagents used in analytical chemistry the numbering system of which continues the first series specified in ISO 6353-2. This document should be read in conjunction with ISO 6353-1 , which describes the general test methods (GM) applicable to the requirements of the reagent specifications and gives such general information as is required for the correct use of the standard.