§ Mr. Bodyasked the Secretary of State for the Environment if he will name the various additives that in his opinion would constitute satisfactory forms of fluoridation; and who are the principal manufacturers or suppliers of those additives.
§ Mr. Denis HowellFluoridation systems which have been approved are systems for adding hydrofluorosilicic acid, sodium silicofluoride, or sodium fluoride. The procurement of these substances is a matter for the individual statutory water90W undertakers and I have no knowledge of the arrangements they make for this purpose.