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Sterile petri dishes are made of polystyrene. The disposable petri dishes come in a package of 20 and are available in two sizes.

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Product Details

Disposable Petri Dish Polystyrene. Sterile. Package of 20.

Flinn Scientific’s Disposable Petri Dishes (50 x 15 mm) or (90 x 15 mm) are an essential tool for any laboratory conducting microbiological or cell culture work. Sold in a convenient pack of 20, these petri dishes offer a cost-effective solution for culturing bacteria, fungi, and other microorganisms, making them perfect for educational settings, research labs, and classroom experiments.

Crafted from high-quality polystyrene, these disposable petri dishes are sterile, ensuring contamination-free cultivation of your samples. Their clear design allows for optimal visibility during microscopic analysis and observation. Each dish features a tight-fitting lid to minimize contamination while providing adequate airflow for the organisms.

The 50-90 mm diameter provides ample surface area for streaking and spreading cultures, while the 15 mm depth ensures enough volume for various agar types. The stackable design saves space and facilitates easy storage in incubators or refrigerators.

Key Features of Disposable Petri Dishes:

Sterile and Ready to Use: Each dish is sterile, ensuring uncontaminated results and consistent culture conditions.

Clear Polystyrene Construction: Offers optimal visibility for observing bacterial and fungal growth patterns.

Tight-Fitting Lids: Minimize contamination while maintaining adequate airflow for successful culture growth.

Stackable Design: Saves space in incubators or refrigerators, making storage easy and efficient.

Why Choose Flinn's Disposable Petri Dishes?

Cost-Effective Solution: With a pack of 20 dishes, these petri dishes are a cost-effective choice for educational and research laboratories.

Versatility in Applications: Suitable for bacterial and fungal culture work, seed germination, and other laboratory applications.

High-Quality Results: The sterile and durable design ensures reliable results for microbiological studies.

Whether you're culturing bacteria, fungi, or conducting plant tissue culture experiments, these disposable petri dishes are ideal for your laboratory needs. Their clear polystyrene design and tight-fitting lids provide the visibility and containment required for accurate observation and safe cultivation.

Order your pack of Flinn Disposable Petri Dishes today and explore our comprehensive collection of microbiology and laboratory supplies at Flinn Scientific.




How to Make Agar Petri Dishes

The steps in making agar Petri dishes should be carefully followed to maintain sterile conditions from the onset of an experiment. (This procedure assumes that the Petri dishes and the media have been sterilized.)

1. If the agar has solidified, stand the tubes (or other media container) in a warm water bath until the media melts to liquid form with no lumps remaining.

2. Wet down the working area with a sponge and disinfectant. Avoid air drafts while plating. The less people walk around the work area the better.

3. Line up the Petri dishes near the edge of the table in a single file for quick and easy access.

4. Use a Bunsen burner and position the burner for minimal distance to the Petri dishes.

5. Use one of the melted agar tubes. Remove the cap or plug and flame the mouth of the test tube by passing it through the flame of the Bunsen burner to sterilize therim of the test tube.

6. Only open the Petri dish to pour the liquid media into the dish. Lift the cover straight up and keep it straight above the bottom half of the dish. Do this while trying not to
create any wind currents.

7. Pour the liquid media into the Petri dish and cover the bottom half of the plate.

8. Replace the cover on the dish immediately and then gently swirl (if necessary) the dish so that the medium is evenly distributed in a thin film.

9. Let the dish sit undisturbed until the media solidifies.

10. When all the poured dishes have solidified, invert the dishes to prevent condensation from falling back onto the agar.

11. Refrigeration can help prevent contamination. Dishes can be stored in a refrigerator for a week or so before use.