Pall Corporation (nyse|PLL), headquartered in Port Washington, New York, is a global business in the diverse field of filtration, separations and purification. Pall has been called the "original clean technology company" since many of its products deliver sustainable social benefits. The company is listed in the S&P 500 and has been included in the Fortune 1000 list since 1991. Total revenues for fiscal year 2011 were $2.74 billion, with $86.8 million spent on R&D.  Wikipedia