6. Fog fluids

The choice in fog fluids is almost as wide as the choice of fog machines themselves.

A brief overview:

E-M Fluid

This fluid generates a medium-density which remains for sustained periods. It is ideally suited to lighting design focussing more on the colours and not the fog itself.

E-Fluid
This fluid is very similar to E-M fluid, but the fog is a little more dense.

E-C Fluid

The logical next step after the e-fluid. This fog remains significantly longer, and it is more dense as well. This fluid is suitable for large-scale open-air concerts, too.

E-HD Fluid

Fogging without compromising! This fluid generates the most dense and longest-sustained fog. This fluid is ideally suited for large-scale open-air events, too, but should only be used in machines with powerful engines. In machines with insufficient power, fluid residue may build up, which would damage the machine.

Fast-Fog
This fluid is used most often in theatre productions that require large clouds of fog that do not dissipate quickly.

When you buy a higher-quailty fog machine, you'll often find that the manufacturer also offers a range of fluids custom-made for that machine.

These fluiids vaporise at precisely the temperatuire the machine's heating exchanger achieves, which results in more visually attractive fog.