Mueller-Hinton Agar (MH Agar) is a standard culture medium used for antimicrobial susceptibility testing of bacteria. It supports the growth of a wide range of non-fastidious organisms and provides reliable and reproducible results for antibiotic sensitivity testing, particularly using the Kirby-Bauer disk diffusion method. Its controlled composition and good batch-to-batch consistency make it widely used in clinical, diagnostic, and research laboratories.