In order to show us how the Uv pen worked, we took samples of all of the class's unknown bacteria and put it into a beaker of water. The shorter wave lengths of the UV pen kill bacteria!
Ahh..the wonders of a steri-pen. Our professor said that he takes his steri-pen when he travels abroad to different countries. The pen only works if there nothing causing a barrier between the bacteria and the light. For instance, the UV rays cannot pass through something as thin as paper.
Unfortunately, no one would drink the water:(
No comments:
Post a Comment