Get a Quote Quantity Request a Quote Description Description FX – 340 is a general purpose foam controlling agent. It acts as defoamer which prevents bubble formation, and also acts as antifoaming agent which breaks bubbles and foam during operations. Related products Defoamers & AntifoamsET-1212 Get a QuoteRequest a Quote Defoamers & AntifoamsSX-438 A Get a QuoteRequest a Quote Defoamers & AntifoamsET-1190 Get a QuoteRequest a Quote