This ELISA (Enzyme-Linked Immunosorbent Assay) test is designed as a qualitative serological method primarily used to detect the presence of Pseudomonas spp. in various agricultural samples such as fruit, ornamental, and vegetable crops. It works by using specific antibodies that bind to antigens common to the Pseudomonas genus, allowing for the identification of whether the bacteria are present or absent in the tested samples. However, it does not provide species-level differentiation, meaning it cannot specify which particular Pseudomonas species is present, but confirms that bacteria belonging to the genus Pseudomonas are present.