Abstract: A method and apparatus for generating a standardized surface contaminated by an aerosol deposited on its surface is described. Aerosols are propelled horizontally onto a vertical surface. The standardized contaminated surface is used to evaluate the effectiveness of cleaning and removing techniques.
Type:
Grant
Filed:
June 2, 2009
Date of Patent:
October 16, 2012
Assignee:
The United States of America as represented by the Administrator of the U.S. Environments Protection Agency
Inventors:
Sang Don Lee, Shawn P. Ryan, Emily G. Snyder
Abstract: A method and apparatus for monitoring water and other fluid systems is described. The fluid is continually monitored spectrophotometrically by measuring many optical parameters in an in-line, on-line system, which compensates for normal fluid changes while detecting abnormalities.
Type:
Grant
Filed:
June 21, 2010
Date of Patent:
January 24, 2012
Inventors:
Roy C. Haught, Gary P. Klinkhammer, Frank J. Bussell
Abstract: Polymer-ceramic mixed matrix compositions contain one or more organic polymers and a nano-sized dispersion of inorganic metal oxide particles which are dispersed throughout the composition. Materials have use in making membranes that act as transfer agents.
Type:
Grant
Filed:
February 9, 2005
Date of Patent:
February 3, 2009
Assignee:
U.S. Environmental Protection Agency
Inventors:
Leland Morris Vane, Ravi Prasad Ponangi
Abstract: An improved method for detection of total coliforms and E. coli comprising a broth containing an ingredient that will suppress growth of non-coliform gram negative bacteria, and at least one chromogen or fluorogen has been used effectively and is cost effective. Preferred methods include use of filter and/or plates containing the growth-promoting ingredients and the indicators.
Type:
Grant
Filed:
November 17, 2003
Date of Patent:
December 12, 2006
Assignee:
The United States of America as represented by the Administrator of the U. S. Environmental Protection Agency
Inventors:
Kristen P. Brenner, Clifford C. Rankin, Yvette R. Roybal-McKenna, Alfred P. Dufour
Abstract: Polymer-ceramic mixed matrix compositions contain one or more organic polymers and a nano-sized dispersion of inorganic metal oxide particles which are dispersed throughout the composition. Materials have use in making membranes that act as transfer agents.
Type:
Grant
Filed:
May 15, 2002
Date of Patent:
April 19, 2005
Assignee:
U.S. Environmental Protection Agency
Inventors:
Leland Morris Vane, Ravi Prasad Ponangi
Abstract: An improved method for detection of total coliforms and E. coli comprising a broth containing an ingredient that will encourage growth and repair of injured coliforms, buffers to maintain a pH in the range of 6.5-8, at least one agent that suppresses growth of gram positive cocci and spore-forming organisms, at least one active agent that will suppress growth of non-coliform gram negative bacteria, and at least one chromogen or fluorogen has been used effectively and is cost effective. In the preferred embodiment, both a fluorogen and chromogen were used. Preferred methods include use of filter and/or plates containing the growth-promoting ingredients and the indicators.
Type:
Grant
Filed:
August 9, 2001
Date of Patent:
December 30, 2003
Assignee:
The United States of America as represented by the
Administrator of the Environmental Protection Agency
Inventors:
Kristen P. Brenner, Clifford C. Rankin, Yvette R. Roybal-McKenna, Alfred P. Dufour