§ Mr. Flannery
asked the Secretary of of State for the Home Department (1) in how many cases the thin layer chromatography method of detecting nitroglycerine has been used as the main method to detect nitroglycerine on a person;
(2) if thin layer chromatography is still used as a method to detect nitroglycerine on suspected terrorists.
§ Mr. Whitelaw
This and other techniques for detecting and identifying nitroglycerine are kept under review. Home Office forensic scientists regard thin layer chromatography as a useful technique; but it is normally used in conjunction with other methods. Figures of the use of this technique are not available.