draft notification of the ministry of public health moph entitled the residual toxic substances in foods 9pages in thai . the moph is proposing to revoke the provisions on the residual toxic substances in foods whereas the moph notification no. 169 b.e. 2538 1995 dated 28 april b.e. 2538 is repealed and new provisions are proposed as follows 1. definition the residual toxic substances mean toxic substances in agriculture including their derivatives in different forms i.e. conversion products metabolites reaction products or any other toxic extraneous matter in such substances which are contaminated in foods. toxic substances in agriculture mean substances purposively applied to prevent destroy lure repel or control pests and animals or unattended plants and animals during cultivation storage transportation distribution or selling as well as applied to control ectoparasites in animals and to control plant growth i.e. defoliaged defruiting inhibited young leaves or substances applied in pre- and post-harvested plant products to prevent deterioration during storage and transportation but not including those substances applied as fertilizer nutritious substance for plants and animals food additives and veterinary drugs. 2. as regards residual toxic substances in foods the following standards must be complied with 2.1the toxic substances in agriculture which mrls are applied must be of those officially registered and the established maximum residue limit mrls are provided for in the annex 1 of this moph notification 2.2the tolerances of those toxic substances in agriculture which are officially prohibited under the notification of ministry of agriculture and cooperatives moac are not permitted except for the established extraneous maximum residue limit emrl as provided for in the annex 2 of this moph notification 2.3in cases other than 2.1 and 2.2 the residual toxic substances must be complied with the established mrls set forth by codex alimentarious commission joint fao who food standard programme