OUNDED IN 1930, CSL WATER QUALITY, INC., originally known as Carbon Solvents Laboratories, manufactured and marketed solvents, cleaners and degreasers for educational facilities and school systems. Our principle product, SLATEX, a blackboard cleaner and finisher, restored blackboards to their original condition. Since our business was centered on schools and custodial maintenance, we began developing additional products for boilers and heating systems.

We formulated BURN-RITE, a fuel oil additive, in the early 1930s, as oil began replacing coal as the primary fuel source for steam heating systems. The product was designed to absorb water and prevent sludge accumulation in oil tanks. Solvent emulsion cleaners for oil spill and strainer degreasing accompanied this product line.

By the mid 1930s, we began blending water treatment products for steam and hot water heating systems. Shortly thereafter, our business expanded to commercial buildings and light industry, as our product line was proven to be effective and accepted as part of their maintenance programs. Next, cooling tower and chilled water treatment products were developed and introduced, completing our product line.

In 1950, we relocated to Kenilworth, New Jersey. In 1974, we moved again to our present locale in Warren, New Jersey. This move was necessitated by the need to accommodate our specialty toll blending operation for private label manufacturing.

In 1986, we changed our name to CSL Water Treatment, Inc. to better identify ourselves with our current market. We then established our TruTest Division, a New Jersey State Certified Testing Laboratory, in order to expand our business while providing reliable testing and monitoring for our water treatment customers.

In 1997, we established CSL Water Quality, Inc., as our State Certified Laboratory became an integral part of our water treatment service. Three years later we launched our TruAire Division, as we identified our customers' needs for safe and healthy working environments.