Purolite is a manufacturing company based in the United States, specializing in the production of chemical products, particularly ion exchange resins. Founded in 1981, the company has developed a range of applications for its products, focusing on environmental solutions, including the removal of per- and polyfluoroalkyl substances (PFAS) from water and wastewater. Purolite's documentation includes guides that provide detailed design and operational guidelines for water treatment systems utilizing their Purofine PFA694 resin, which is noted for its high selectivity and efficiency in PFAS removal. Additionally, the company publishes case studies that explore the benefits of specific methodologies, such as mild pH elution, in various applications. Their content reflects a commitment to providing technical resources that assist clients in optimizing the use of their products for environmental remediation and other chemical applications. With a workforce of 501 to 1,000 employees and significant revenue, Purolite continues to contribute to advancements in the chemical manufacturing industry.