Jem Pro LOW FOG Premium Fluid High Density - 25LJEM Low Fog Fluid, High Density is a water based low fog formula specially designed for use in the JEM Glaciator. JEM Low Fog Fluid, High Density produces a dense pure white ground hugging effect which will disperse and evaporate before any visible rising and heat exchanging. A longer lasting, higher density fog is sometimes required for a more controlled environment and with its longer hang time, JEM Low Fog Fluid High Density is well suited for