Waters Corporation makes analytical instruments, including liquid chromatography and mass spectrometry systems, used in pharmaceutical development, food safety testing and environmental analysis to identify and measure chemical compounds in samples. Its instruments are widely used in pharmaceutical quality control and drug development, where regulatory requirements mandate precise chemical testing throughout the drug manufacturing process. Much of Waters' revenue comes from consumables, service contracts and software tied to instruments already installed in customer labs, giving it a recurring revenue base beyond the initial equipment sale. The company's growth is tied to pharmaceutical industry research and development spending along with broader demand for chemical analysis across food, environmental and industrial testing applications.