Pall Corporation is a company that manufactures filters for purification. You may also be looking for ETF ETFS Physical Palladium Shares (PALL)

Pall Corporation (NYSE: PLL) makes filters that are used to purify air water, blood and other fluids. The company's industrial customers use Pall's filters to reduce waste and pollutants that can be harmful to the environment. The company also sells filters to pharmaceutical companies and hospitals for the purification of drugs and to ensure sterile conditions. The company differentiates itself from competitors by working closely with clients to develop custom filtration products. Although this makes product development more expensive, PLL's custom products also result in higher switching costs for its customers. Moreover, many of Pall's products require filters that must be replaced periodically to remain functional, and the sale of these filters accounts for 75% of all sales. The company earned $2.3 billion in revenue and $196 million in net income in 2009.^[1]

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