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;