Ashby’s Mannitol Agar 500G

Ashby’s Mannitol Agar is recommended for isolation of Azotobacter species from soil that can use mannitol and atmospheric nitrogen as source of carbon and nitrogen respectively. Azotobacter is a non-symbiotic nitrogen fixing bacteria, also known as biofertilizer. Dipotassium phosphate provides buffering to the medium. Various essential ions required for promoting growth of Azotobacter are also available in this medium.