NF T72-070-4*NF EN 1014-4:2010 Wood preservatives - Creosote and creosoted timber - Methods of sampling and analysis - Part 4 : determination of the water-extractable phenols content of creosote.
1995NF T72-073:1995 Wood preservatives. Creosote and creosoted timber. Methods of sampling and analysis. Part 4 : determination of the water-extractable phenols content of creosote.