Nikolaidis complained that government workers in Washington were tested ahead of postal employees.
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Nikolaidis was invited to present his invention at an international conference on arsenic in Dhaka, Bangladesh, in early February.
Nikolaidis and colleagues have submitted a patent application for the filter they developed.
Sixty postal workers at the Morgan Parcel Distribution Center and 45 at the Rockefeller Carrier Station have already been tested, Nikolaidis said.
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But the Greek side raced 3-1 up midway through the first half through Christos Maladinis and then, three minutes later, Demis Nikolaidis.
Nikolaidis is designing filters for larger use such as local water systems.
"We're talking about water, a basic part of our life, " Nikolaidis says.
Nikolaidis has been researching arsenic for the past four years, having come across the problem while working at a contaminated landfill in central Maine.
The filter material developed by Nikolaidis and his colleagues, with funding from the Critical Technologies Program and industry, has at least a 20-year life span.
"I hope we will be able to create an inexpensive technology that can be used here and in countries like Bangladesh to save people's lives, " Nikolaidis said.
If the standard were set at 10 micrograms per liter, Nikolaidis said thousands of local water systems and private wells in the country would have to filter the arsenic out to be in compliance.
"They don't have a plan, which is very scary, or they do have a plan, and they're just not telling us, " Louie Nikolaidis, a lawyer for the New York Metro Area Postal Workers Union, said immediately after the meeting.
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Most private well owners in the United States have not tested their water for arsenic levels, according to Jeff Lackovic, a graduate student majoring in environmental engineering, who has worked with Nikolaidis on the project since they began analyzing how arsenic moves in groundwater in 1994.
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