Petri Plates

Petri plates, also known as Petri dishes, are shallow, round containers used to grow microorganisms such as bacteria, fungi, and algae. They’re a fundamental tool in microbiology for culturing, isolating, and studying organisms in controlled conditions.

Sterile Petri plates are mainly used for microbiological testing, quality control, and cell culture. They help ensure no external contamination affects experimental results — making them ideal for pharmaceutical, food, and clinical labs.

Petri plates are usually made of:

• Polystyrene (PS): Clear, disposable, and perfect for observing cultures.
• Polypropylene (PP): Resistant to chemicals and heat, suitable for autoclaving.
• Glass: Durable, reusable, and ideal for high-temperature sterilization.

Plastic Petri plates (mainly PS) are disposable, convenient, and reduce contamination risk. Glass Petri plates are reusable and eco-friendly but require cleaning and sterilization between uses. Many labs prefer glass for long-term cost efficiency and plastic for fast, sterile experiments.

Glass Petri plates can be reused after proper sterilization (usually by autoclaving). However, disposable plastic plates are for single use only and should not be reused, as they can warp or retain contaminants.

Petri plates come in standard sizes like 35 mm, 60 mm, 90 mm, 100 mm, and 150 mm. Smaller plates are great for individual colonies, while larger plates are preferred for batch culture or antibiotic testing.

Always work under sterile conditions (e.g., laminar airflow hood).
Label on the base, not the lid.
Store inverted (agar side up) to prevent condensation.
Avoid direct light and temperature extremes.

Yes, pre-filled Petri plates (also called “ready-to-use culture plates”) are available for common media like Nutrient Agar or Blood Agar. They save prep time and ensure consistency in routine microbiology testing.

Absolutely! Labs in Calgary, Toronto, Alberta, and Ontario can order Petri plates in bulk directly from Max Biochem. We offer different materials and sizes to suit both research and industrial needs.

Max Biochem’s Petri plates are made from high-quality, medical-grade materials ensuring excellent clarity, durability, and sterility. They’re designed for accuracy, reliability, and contamination-free results across a range of microbiology applications.