Provides detailed requirements for the production of a 500 W nominal, pre-mixed type test flame. The approximate overall height is 125 mm. Two test flames are described: Method A may only be produced using methane whereas method C may be produced using either methane or propane. The main changes with respect to the previous edition are described below: - The introduction has been revised, - Test methods B and D have been withdrawn. Test methods A and C have been retained with their original letter designation, - Normative reference ISO 1337 has been withdrawn without a replacement by ISO/TC 26. The callout Cu-ETP UNS 11000 is the replacement for all references to ISO 1337. It is taken from ASTM B187-00 and describes high conductivity electrolytic copper, - A new Annex H has been added which provides access to equipment manufacturers and suppliers,- Alignment with other publications in the IEC 60695-11 series has been made, where appropriate. Has the status of a basic safety publication in accordance with IEC Guide 104.