Correction fluid the Montreal Protocol on Substances That Deplete the Ozone Layer, and then the slightly safer trichloroethylene. Thinners currently used with correction fluid include bromopropane. Because it contains organic solvents (volatile organic compounds), unused correction fluid thickens over time as volatile solvents escape into the air. It can become too thick to use, and sometimes completely solidifies. Therefore, some manufacturers also sell bottles of solvent as "thinner", a few drops of which will return the correction fluid to its original liquid state. To avoid the inconveniences of organic solvents (safety and availability), some brands of fluid are water-based. However, those have
1987 (What the Fuck Is Going On?) Run-D.M.C. type of old-school rapping"; and "The Penguin Price Guide for Record & CD Collectors" called "1987" an "entirely brilliant example of the art of disc-jockey-as-producer". Giving another retrospective review from across the Atlantic, "Trouser Press" described "1987" as "energetic" and "a loopy dance album that isn't unlike a lot of sampled records, but proceeds from an entirely different cultural understanding." Bill Drummond and Jimmy Cauty were responsible for the concept and production of "1987", its lyrics and the TR-808 beatbox rhythms. Drummond provided rap, and an additional rapper introduced as 'Chike' appears on "Don't Take Five (Take What You