Hudson Technologies, Inc., through its subsidiary, Hudson Technologies Company, engages in the provision of solutions to recurring problems within the refrigeration industry in the United States. The company engages in the sale of refrigerant and industrial gas; provision of refrigerant management services consisting primarily of reclamation of refrigerants, re-usable cylinder refurbishment, and hydrostatic testing services; and RefrigerantSide services comprising system decontamination and recovery to remove moisture, oils, and other contaminants. It also offers Chiller Chemistry, which integrates several fluid tests of an operating system and the corresponding laboratory results into an engineering report; Fluid Chemistry, an abbreviated version of Chiller Chemistry, which is designed to quickly identify systems that require further examination; SmartEnergy OPS, a web-based real time continuous monitoring system, for measuring, modifying and improving the efficiency of energy systems, including air conditioning and refrigeration systems, in industrial and commercial applications; and ChillSmart, which combines the system optimization with Chiller Chemistry for providing a snapshot of a packaged chiller's operating efficiency and health. In addition, the company participates in the generation of carbon offset projects. It serves commercial, industrial, and governmental customers, as well as refrigerant wholesalers, distributors, contractors, and refrigeration equipment manufacturers. The company was incorporated in 1991 and is headquartered in Woodcliff Lake, New Jersey.