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this post was submitted on 24 Aug 2025
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Science Memes
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Why do these agar plates always have two intersecting lines on one side and nothing on the other side? Is it like an environment control thing?
The standard way to streak a plate involves creating a resevoir of the sample you are studying, then using a sterile tool to streak through that at a steep angle. Then you streak through the first streak with another sterile tool, and so on and so forth.
As you streak through lines, the amount of bacteria pulled along is reduced until you are able to isolate individual colonies.
Til! Thanks!
Nice username
1 through to the end are all made with new, sterile.. sticks?
Look ma, I'm a biochemist now!
raise your hand if you ever wrecked a plate by forgetting to cool the loop
✋
This would have been a handy technique if in addition to forgetting to cool the loop I also noticed that I had forgot to cool the loop lol
Another way is one use throwable plastic hoop. Which is completely stupid, but well...