Blue Agar in Petri Dish - Microbiology Lab Culture Medium #2179410 (License: Personal Use)

This image shows a standard glass or plastic petri dish filled with a rich, cobalt-blue agar medium, likely supplemented with indicators such as bromothymol blue or methylene blue for selective or differential culturing. The smooth, even surface suggests sterility and readiness for inoculation, with the translucent rim revealing subtle color gradients where the agar meets the dish wall. Such media are essential in clinical diagnostics, environmental testing, and academic microbiology.

Used on educational science websites, lab supply catalogs, microbiology textbooks, and research institution pages; targets students, lab technicians, and researchers seeking visual references for culture media preparation and microbial identification protocols.