Cool the contents of your pail, drum, or tote from the outside. Since they cool from the outside, there's no risk of introducing contaminants to your material. These coolers are often used to stabilize solutions or keep liquids from evaporating. Connect them to a chiller or water source to circulate cold liquid around your container. Secure them with elastic straps. When they’re filled, these coolers conform to the surface of a container, eliminating air pockets to cool evenly. A layer of insulation locks in the cold and reduces condensation. As liquid flows out of these coolers, you can channel it back into your chiller or empty it into a drain.

You can also use these coolers to keep material warm—they circulate fluid up to 120° F. When using them at temperatures above 45° F, fill with water only.