The guide to Standard Reference Materials Technical Categories allows you to locate information about a specific SRM or RM by narrowing down information as it relates to a specific SRM/RM.

Begin at the Category level by selecting one of the three categories. Once you have selected your category, select the Section that best describes the material class or technical property class of the SRM/RM. The sections are further divided into Subsections, each of which describes a specific type of material or technical property and the physical forms(s) of the SRMs and RMs. Select the title of the subsection that best describes the SRM/RM data you require. For additional information, refer to the Users Guide.