Chapter 8 - Test Chamber 16
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Chapter 8 - Test Chamber 16
sp_a4_jump_polarity.bsp 
This is the fifty-eighth level of the game, and takes place within an incomplete Aperture Science Test Chamber. This level features both the Excursion Funnel and Repulsion Gel, and demonstrates the way in which the Gel can be used to dispose of some threats. Turrets are present as an additional hazard in this level.
Hazards
- Falling to your death
- Turrets
Walkthrough
- Shoot portals on the Conversion Gels on both sides and go through the portal.
- Go through the door. Shoot a portal on the wall below the Repulsion Gel.
- Place the other portal on the floor and go through it.
- Fire a portal at the end of the Excursion Funnel above.
- Push the Switch.
- Now the gel should flow in the Funnel. Wait for the timer to stop and then put the other portal on the wall.
- Now place the same portal at the end of the Funnel. Press the Switch and quickly jump from the gel into the Funnel.
- Wait until you've passed the Turrets and then go stand on the button.
- Wait for the gel to pass through the portal as much as it can and then shoot the other portal on the wall on the right - above the Turrets - and leave the button.
- Watch for the gel to go on top of the third Turret and then shoot the same portal on the floor. All three of the Turrets should bounce away.
- Push the Switch on the other side of the glass.
- Now go in the funnel and wait until you reach the ceiling.
- Shoot the other portal on the angled wall and wait until you land on solid ground.
- Go in the Chamberlock.
Video walkthrough
Related achievements
 |
Smash TV Break 11 test chamber monitors |
Music
Main article: Portal 2 soundtrack
TEST by Aperture Science Psychoacoustics Laboratory [6:14] | 
Download | 
Play
Excursion Funnel by Aperture Science Psychoacoustics Laboratory [4:32] | Download | Play