Upon confronting Wheatley at the end of the game, Chell uses this information to her advantage: where the only bit of Conversion Gel left in the core room was a small spot underneath Wheatley, but a hole had opened in the ceiling revealing the Moon. In addition, lunar dust is hazardous to human tissue, lung tissue in particular - Cave describes moon rocks as 'pure poison' and long-term exposure to Conversion Gel was a major factor in his deteriorating health. By the time Johnson found out about the moon rock's portal-friendly nature, he was so far in debt that the company couldn't afford to buy 7 dollars worth of moon rocks, much less 70 million. Testing objects that come into contact with this gel will have previously-applied gels cleaned off of them, as if no gel had been on them at all.Īccording to a pre-recorded message from Cave Johnson, Conversion Gel is made up of ground-up Moon rocks as they are an excellent portal-conducting surface. Several areas in Test Shaft 09 seem to indicate that the Conversion Gel was used to paint all further testing facilities, explaining how only white, painted walls were affected by the ASHPD. It was created during the 1980s and tested in Enrichment Sphere 06 in Test Shaft 09 from 1981 to 1986, and brought there from Pump Station Gamma.Ī main use of this gel is in the end of Portal 2, where Chell used it to her advantage to defeat Wheatley. Conversion Gel spreading in Pump Station Gamma.Ĭonversion Gel is a white fluid that allows the ASHPD to place portals on non-portalable surfaces (typically metal).

Portal 2 conversion gel