Patent ID: 7132254
Filing Date: 2006-11-07
Classification: G01N

Abstract:
1. A method of determining the amount of phycocyanin-pigmented algae or bacteria in water from light reflected therefrom, said method comprising the steps of: (a) obtaining a measurement of reflected light from said water, said measurement comprising a measurement of the respective amount of light in at least five wavelength ranges: (i) from about 0.45 μm to about 0.52 μm (ii) from about 0.63 μm to about 0.69 μm; (iii) from about 0.76 μm to about 0.90 μm; (iv) from about 1.55 μm to about 1.75 μm and (v) from about 2.08 μm to about 2.35 μm; and (b) determining the amount of said phycocyanin-pigmented algae or bacteria in said water from said respective amounts of light by applying an algorithm relating said respective amounts of light in said at least five wavelength ranges to said amount of said phycocyanin-pigmented algae or bacteria in said water.