This part of ISO 3673 specifes the methods of preparation of test specimens and the test methods to be used in determining the properties of crosslinked epoxy resins. The properties determined have been selected from the general test methods in ISO 10350-1:2007.Test methods for the determination of the properties of non-crosslinked epoxy resins are not included in this part of ISO 3673.NOTE Test methods for non-crosslinked epoxy resins are specifed in ISO 18280.In order to obtain reproducible and comparable test results, it is necessary to use the test methods, sample preparation and conditioning, and specimen dimensions specifed herein. Values determined will not necessarily be identical to those obtained using test specimens of different dimensions or prepared using different procedures.Other standards exist concerning the determination of properties and preparation of test specimens for epoxy-based products, to which reference will be made, if required.