HC Deb 12 April 1946 vol 421 cc353-4W
Colonel Clarke

asked the Minister of Health what are the micro-organisms whose presence can be detected in milk by the methylene blue test.

Mr. Bevan:

I am advised that the methylene blue test does not detect the presence of any particular type of microorganism in milk. The test is a measure of all the organisms present in milk and indicates its probable keeping quality.