Imported and domestic foods are being recalled with increasing regularity due to contamination or because they contained materials which were not supposed to be in them. The news media is abounding with information on the lack of food safety and its causes. It appears that safety inspectors are unable to inspect all the foods and that many imported foods are evading inspection.

This is not surprising because testing the foods using conventional test methods is very expensive, and time consuming.  In fact, if all foods were sent to be tested, many would spoil before the laboratory results were obtained.