In Portal however, disintegration effects are silent. When an object is vaporized through the grill, it turns black and begins flaking pieces of itself, slowly hovering in mid-air before disintegrating in a loud distorted noise. This is likely a developer's oversight, since the player has no reason to take these panels in the following offices. Some objects such as the squared metal panels found in the maintenance area before the first Rocket Sentry are not affected by the Emancipation Grill. The prototypes featured several emitters along each side to provide the stable grill and a barrier field. Prototypes from the middle 20th century stages of the grills were used throughout the Aperture Science Innovators' Enrichment Shafts when testing the Mobility Gels. Strangely, the broken grill found in one test chamber emits particles similar to those of the original grill from Portal, implying that the field emitted by the grill is the same, but has been altered somehow.

The field can be contained through the slides surrounding its emitters, rather than deactivating. In Portal 2, the grill's emitters are also two curved emitters but have a blue stripe running vertically down the sides which disperse the fluid-like field. In Portal, the grill's emitters are two curved emitters with two blue stripes running horizontally along the center of the emitters. The grill's primary purpose is to vaporize unauthorized equipment to avoid stealing of products such as the Weighted Storage Cubes, Discouragement Redirection Cubes, and Turrets, and to prevent them being taken into subsequent test chambers. They also prevent test subjects from teleporting back to previous test chambers. In that way, each new test chamber is started with a clean portal network, and must use their assets properly within that section of the testing area. A grill guarding a maintenance area in Portal 2.ĭuring gameplay, the grills serve to reset any portals produced by the Portal Device, as when the player passes through a grill, the portals evaporate.

Portal 2 episode 1