The Dial 5284 Scale Eliminator is a highly-reliable, durable product from Dial. This eliminator is designed to control scale build-up and corrosion in coolers. It's specially formulated to hold materials in suspension by raising the solubility level of the water. It reduces mineral build-up on pads and must be used with a bleed off kit or PowerClean purge pump to flush suspended minerals. The mesh bag rests in cooler pan water.