How to Tell If a Petri Dish Has Been Contaminated?

Answer Petri dishes are easily contaminated. Keeping dishes in dirty environments or in humid conditions can cause bacteria to grow. Even exposure to air is an opportunity for germs to find a home on the ... Read More »

Top Q&A For: How to Tell If a Petri Dish Has Been Contaminated

How to Grid a Petri Dish?

Scientists use petri dishes to grow, or culture, cells and view them through the plastic or glass covers. Some scientists close the petri dishes off to the external environment while others leave t... Read More »

Do you need to incubate a petri dish?

Although scientists often use petri dishes to incubate cells, you can also use them in other ways. You can use them just to view something under a microscope, to germinate seeds and to transport or... Read More »

Who invented the petri dish?

Julius Petri, who was a lab technician in Robert Koch's laboratory, invented the petri dish in 1877. It is a low, circular dish-shaped glass container with a see-through, removable lid used to grow... Read More »

What Are the Functions of a Petri Dish?

Since its invention in the mid-19th century by German bacteriologist Julius Richard Petri, the petri dish has been a crucial piece of equipment in microbiology labs around the world. At a basic lev... Read More »