Control Tests
16. Control tests shall be carried out each day that a test is initiated using–
(a)Clostridium perfringens no more than seven days old at the time of use;
(b)Escherichia coli NCTC 10418(1) or equivalent not more than seven days old at the time of use; and
(c)rendered animal protein which is free of Clostridium perfringens.
(1)
The National Collection of Type Cultures, Central Public Health Laboratory, 61 Colindale Ave, London NW9 5HT.