SS nutrient agar medium is yellow to yellow-green. SS nutrient agar culture medium is a kind of culture medium for isolating Enterobacter. Its ingredients include broth, yeast extract, glucose, agar, etc., and its pH value is 7.2-7.4. In the process of culture, if Enterobacter grows, it will form a typical blue-green metallic luster colony on the culture medium, which is a feature of SS nutrient agar culture medium.