Quicksilver in the 30ml big bottle is a faster, more intense formula. Specially formulated, Quicksilver Multi-purpose Solvent Cleaner 30ml big bottle is an incredibly pure and potent isobutyl nitrite based formula which continues to be extremely popular in major world capitals around the globe. A faster, more intense cleaner, Quicksilver was developed by cutting edge chemists using innovative lab methods in 1979. It's huge following of loyal fans are empowered connoisseurs who trust Quicksilver to always deliver the purity and power of one of the world's most powerful multi-purpose solvent cleaner. Powerized with the exclusive Power-Pak Pellet, Quicksilver stays pure and powerful, when you need it.