Vertrel Sion cleaner is for vapor degreasing of electronics and other surfaces. Complies with REACH, F-gas regulations, and other environmental regulations. Is classified as a hydrofluorolefin (HFO) solvent; is nonflammable and ozone-safe. Reportedly does not require acid testing, stabilizer maintenance or solvent monitoring. Does not contain surfactants. Cleans blind vias and flushes underneath BGAs.
DuPont, www.dupont.com