A Petri dish is a shallow, transparent, cylindrical lidded dish used by biologists to culture cells and grow microorganisms like bacteria, fungi, and small mosses. Named after the German bacteriologist Julius Richard Petri, it provides a stable, sterile, and expansive surface area to hold nutrient agar or growth media
Essential Functions and UsesMicrobial Cultivation: Holding nutrient-rich agar substrates to grow, isolate, and identify specific bacterial or fungal colonies.
Antibiotic Testing: Performing sensitivity assays via the disk diffusion method to observe how pathogens respond to different medications.
Cell Observation: Offering clear transparency for direct microscopic examination without needing to transfer specimens to slides.
Educational Projects: Conducting foundational science experiments, such as demonstrating seed germination or tracking household mold growth.
Material TypesPolystyrene (Plastic): Lightweight, cost-effective, disposable options ideal for routine clinical testing to eliminate cross-contamination risks.
Borosilicate Glass: Heat-resistant, durable, and highly reusable vessels that withstand repeated sterilization inside laboratory autoclaves or ovens.