proy-nom-203-scfi-2015 que establece los limites maximos permisibles de emision y contenido de formaldehido en tableros de particulas de madera y tableros de fibras de madera fabricados con urea formaldehido y en los productos fabricados con este tipo de tableros draft mexican official standard proy-nom-203-scfi-2015 establishing the maximum permissible limits for formaldehyde emissions from and the formaldehyde content of wood particle board and wood fibreboard manufactured using urea-formaldehyde and products manufactured with this type of board 5 pages in spanish the notified draft mexican official standard establishes and defines the maximum permissible limits for free formaldehyde emissions from and the free formaldehyde content of domestically-produced or imported wood particle board and wood fibreboard during the production of which urea-formaldehyde resins were used as an adhesive as well as products manufactured with such boards in order to ensure that they are used stored manufactured marketed exported and imported in accordance with safety standards and that they do not pose a risk to the health of users marketing agents and workers in factories that manufacture such products. formaldehyde which is needed to make urea-formaldehyde adhesive resins for the production of wood-based boards is a normal-pressure highly volatile gas which can be found in low concentrations in the open air as it is emitted by many materials and products including foodstuffs. however it may pose health risks if high concentrations are present in the air. in light of the above so as to prevent health risks and ensure the safety of users of wood particle board and wood fibreboard manufactured with urea-formaldehyde and wood particle board and wood fibreboard products mandatory regulations have been established on the maximum permissible limits for formaldehyde emissions from and the formaldehyde content of domestically-produced or imported wood particle board and wood fibreboard as well as furniture and all products manufactured with this type of board.