Difference between revisions of "Agar Diffusion"

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(Red Food Coloring)
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[[File:Reddropdiffusion4.jpg|200px|thumb|left|20 hours later, inverted]]
 
[[File:Reddropdiffusion4.jpg|200px|thumb|left|20 hours later, inverted]]
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=Notes=
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Carbon black has a particle size closer to that of a virus and might be more appropriate to model viral particle diffusion.
  
 
=What Links Here=
 
=What Links Here=
 
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{{Special:WhatLinksHere/{{FULLPAGENAME}}}}

Revision as of 05:19, 20 July 2018

A simple demonstration of diffusion through agar media to visually illustrate that viruses diffuse through plate media.

Red Food Coloring

This is done with a single drop of food coloring containing FD&C Red 3 and Red 40. Be careful not to disturb the plate and cause the drop to run until it is compltely absorbed into the media.

Starting Drop
File:Reddropdiffusion3.jpg
Two and a half hours later

After sitting overnight the liquid was completely absorbed into the media and the plate could be inverted.

20 hours later, inverted

Notes

Carbon black has a particle size closer to that of a virus and might be more appropriate to model viral particle diffusion.

What Links Here