The FPA instrument is built with steel metal. The equipment is simple, lightweight, portable and used very friendly. It is the ideal tool for detection of the fluorescence polarization in field farms and in the laboratories. The instrument can be used to detect the antibodies in serum, plasma and whole blood and milk. The test can be finished in 15 seconds or 2 minutes. Computer power drives the FPA instrument and it can be used 3-4 hours without electricity supply. The FPA instrument can be connected a printer to print the test results or/and electronic transmission of the test data. The FPA instrument is made in Germany.