If normal pre-treatment by extraction with light petroleum and water is applied, correction factors b1 and b2 may generally be ignored, except in the case of unbleached cotton, unbleached flax and unbleached hemp, where the loss due to the pre-treatment is conventionally taken as 4 %, and in the case of polypropylene, where it is taken as 1 %.
Vista la Carta de las Naciones Unidas, en particular los artículos # y # y, en el capítulo VII, los artículos # yEurLex-2 EurLex-2