Background: Salmonellosis is considered as one of the most important diseases in poultry as it causes devastating losses in chicken industry. Proper identification of the infected and carrier birds is required to control the disease among chickens. In field situation whole blood agglutination test is performed in order to identify carriers of Pullorum and Fowl typhoid particularly, in breeder operations. In this test, serum antibodies are detected by using a specially made antigen for this purpose. In Sri Lanka, three antigen products are used commonly in whole blood agglutination test. Aim: This study was carried out to compare these two locally available S. Pullorum antigen products and to determine any difference in the efficacy. Materials and Methods:"Shaver Brown" commercial layer birds (70 in number) were used in the experiment. Birds were