Tank Saver, With equipment costs constantly spiraling upwards every fire-fighting agency must maintain its equipment properly. Corrosion, if not prevented, can virtually put a unit out of business. With a little foresight and the use of this product on a regular basis, the maximum life can be obtained from any piece of equipment. Used at a rate of 600 to 1, this product offers the lowest cost in the industry. Couple that with an indefinite shelf-life and biodegradability and you've got a first place winner.