HC Deb 28 January 1976 vol 904 c243W
Mr. David Watkins

asked the Secretary of State for Prices and Consumer Protection what action has been taken about the brand of invisible ink which was the subject of the Question of the hon. Member for Consett on 8th December 1975.

Mr. Alan Williams

At the request of my Department the manufacturer has agreed to take immediate steps to reduce the sulphuric acid content to a level which my advisers consider to be safe.