Petri dishes are available in several standard sizes to accommodate various laboratory needs. According to Greiner Bio-One, common sizes include 35, 60, 94, 100, and 145 mm in diameter.
Standard Petri Dish Sizes
These sizes are designed for different applications and sample volumes. Here's a breakdown:
| Size (mm) | Common Use |
|---|---|
| 35 | Small-scale experiments, microbial testing, and sample collection from small areas. |
| 60 | Routine culturing, general microbial work, and short-term incubation. |
| 94 | Larger culture volumes, applications with a need for more surface area. |
| 100 | The most common size for general use, ideal for routine microbial and cellular cultures. |
| 145 | Large volume applications, growth of large microbial colonies or plant cell culture experiments. |
Practical Insights
Choosing the Right Size
- Sample Volume: Consider the volume of your sample. A 100mm dish would be too large for a small sample and a 35mm may be insufficient for a large one.
- Experiment Type: Different experiments require different surface areas.
- Incubation Space: The size of your incubator space is a key factor in choosing the right petri dish size.
Practical Considerations
- The listed sizes refer to the diameter of the dish.
- Petri dishes are made from materials such as plastic or glass.
- Dishes may be sterile and intended for single-use or reusable after sterilization.
Importance of Standard Sizes
Standardization in size ensures compatibility with other laboratory equipment and protocols. It also helps maintain consistency across experiments and research studies.
