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Backwash Experiment

I stumbled on this experiment and we decided to try it.

It is often believed that the last few swallows of soda in a can is backwash.  This experiment tries to prove or disprove this idea.

   

The site said to take a Kool-Aid packet and dump it in your mouth to dye your spit bright red.

   

He gagged horribly!  It was so sour that it made the saliva run and run.  He had to spit out the loads of saliva over and over before he could gain his composure again.

   

He then took a normal drink form a glass of water and we could see that it did indeed leave backwash in the glass.  Yuck!

   

He then tried it with a straw in another glass and there was definitely backwash in there.  Gross!

I never liked drinking after anyone ever and now my suspicions are confirmed!  Double yuck!!!

Click on the original site to see their whole experiment.  There are 6 pages of it.

I didn't read until after we did the experiment that chocolate syrup might work just as well as the Kool-Aid without the horrid sour taste.  You might try that way first if you try it. If anyone does try it that way, send me a link or picture so I can add it to this page.

Others Who Tried it:

Martinzoo did the experiment and just used pre-sweetened Kool-aid and had great, although yucky, results!!  Definitely no drink sharing for me, especially if it is from a sports bottle!

Martinzoo's sports bottle results

 

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