The facecious answer is about 20 cents. Petri dishes are used to grow all manner of micro-organisms using a variety of media (food) for the bugs to grow on. Penicillin was discovered accidently growing on a petri dish this accidental discovery has saved probably 100s of millions of lives.
The prefix "micro" means "a millionths of".
It is $88-104 according to one online source.
How do I find out how much my plates are worth?
The value of Bill Bell Collectible Cat plates varies somewhat. However, it is possible that the plates may have a value of between 6 dollars and 20 dollars.
50-200
30 micro ohms
it is in micro seconds
What would be the value of a 4pc plate set
What is the value of a Marlin Micro Groove Barrel MCD 336 Cal 30-30 WIN?"
There are 12 plates in the collection, one for every month. Currently their collective value is low ($100 for all twelve), however they hold great nostalgic value to some.
The value of John Constable ceramic plates will depend on the condition. They are currently listed for sale between $360 - $400.
Value of set of four Norman Rockwell Plates in the collection of "Four Seasons" from 1971?