This specification covers general cleaners (excludes petroleum products) that are hazardous air pollutant (HAP) free and many of which contain either a low content of volatile organic compounds (VOC) or are composed entirely of exempt VOC's, for use on military systems. The word "cleaners" throughout the specification means both "general cleaners" and "cleaning compounds" (more than one component). All classifications and requirements refer to the cleaner at the concentration for which it is to be used.