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Diversity Gels

"While I was out investigating I found an exciting new test element..."
-GLaDOS
Well, I had aimed to create an introduction puzzle for a new idea for use of diversity vents. This puzzle was aimed to simply introduce the element; so it's meant to be easy but innovative.
Possible side-effects include: thinking out side the box, confusion, depression and death. But the most important thing is to have fun with it.

In short:
Difficulty: Easy
Aim: Introduction of a new test element
Version: RC2

Make sure to try Rapid Effusion, Stopping Potential, Disrupted Suspension and 3 Gels too!

Update!
Can you find the companion cube?
Tip: It's not hidden where you'd suspect it...

There's also a walkthrough video, for those who get stuck. I don't suggest watching it, though, unless you really are stuck as it will spoil your experience later.