Request for microbiology testing media for Seattle Division Microbiology Department. These products are mandatory for the identification of pathogenic organisms. Products required for the selection an... Request for microbiology testing media for Seattle Division Microbiology Department. These products are mandatory for the identification of pathogenic organisms. Products required for the selection and identification of Methicillin Resistant Staphylococcus aureus (MRSA) and Vancomycin Resistant Enterococcus (VRE). Products are ordered monthly, and these supplies enable microbiologists to identify disease in veteran patients.