The great Cave Johnson and the boys in marketing have come up with a great way to get testing done on a much larger scale with Gels to use at home! Available over at Think Geek, you too can become an Aperture Science tester by picking up your very own Propulsion, Repulsion, or Conversions gels. Each gel is available for $14.99 or all three for $40 you’ll be bouncing and sprinting in no time, or you can just play with it like silly putty (user experiences may vary). So pick up your Aperture Gels today and do your part FOR SCIENCE!

[via Think Geek]