Katz K W, Cook R C
J S Afr Vet Assoc. 1979 Sep;50(3):217-9.
Two tests for penicillin residues in milk using the test organisms Sarcina lutea and Bacillus stearothermophilus var. calidolactis respectively are presented. The test methods are described, the results compared and the advantages of the latter test demonstrated.
