• AWWA JAW64356

AWWA JAW64356

Journal AWWA - Laser Scanning Cytometry for Enumeration of Fluorescent Microspheres

American Water Works Association , 03/01/2007

Publisher: AWWA

File Format: PDF

$15.00$30.00


As surrogates for viruses, bacteria, and protozoa, fluorescent microspheres can be used to challenge pathogen-removal technologies and determine their efficacy in removing contaminants of interest. In addition, microspheres are helpful in quantifying flow patterns and mixing characteristics. However, the most common microsphere enumeration method, direct count by fluorescence microscopy, requires skilled operators and expensive equipment. In the research discussed here, a prototype device that used laser scanning cytometry and that was constructed of relatively inexpensive components performed at least as well as the microscope for the range of ~5-200 µS/mm2. Among the many challenges facing water providers today are increasingly stringent regulations and the threat of intentional contamination of water sources with pathogens. A device such as the prototype described here would offer utility managers a way to test their water supply technologies with more accuracy and precision. It represents a building block toward more advanced (but still low-cost) technologies that can detect pathogens and help reduce risks. Includes 7 references, figures.

More AWWA Standards PDF

AWWA WQTC71464

AWWA WQTC71464

$12.00 $24.00

AWWA ACE71028

AWWA ACE71028

$12.00 $24.00

AWWA ACE71051

AWWA ACE71051

$12.00 $24.00

AWWA WQTC71498

AWWA WQTC71498

$12.00 $24.00