permitted sweetenermeans the sweetener salt of aspartame–acesulfame so far as it satisfies the purity criteria for it set out at pages 19 to 21 of the Food and Agriculture Organisation’s Compendium of Food Additives Specifications Addendum 8 (2000) FAO Food and Nutrition Paper 52 Addendum 8 and any sweetener specified in Column 2 of Schedule 1 which satisfies the specific purity criteria for that sweetener set out— (a) in the case of sucralose, at pages 119 to 124 of the Food and Agriculture Organisation’s Compendium of Food Additives Specifications Addendum 2 (1993) FAO Food and Nutrition Paper 52 Addendum 2;