METHOD AND APPARATUS FOR ANALYZING SOLUTIONS

专利名称：METHOD AND APPARATUS FOR

ANALYZING SOLUTIONS

发明人：MORRIS, David Alexander

Nathaniel,SWANSON, Teresa, Lynn

申请号：EP07813900.3申请日：20070808公开号：EP2069776B1公开日：20171213

摘要：An apparatus and method of analyzing an aqueous solution, as may be

implemented with a hand-held portable electronic device (10). A test pad (32) responsivein color to a characteristic of an aqueous solution is interrogated by the device bymeasuring, in a plurality of wavelength ranges, intensity values of a test light as reflectedoff of the test strip. The intensity values may be expressed as values relative to

intensities reflected off of white and black calibration surfaces. A relationship among theintensity values for the various wavelength ranges is developed through an algorithmthat provides a ratio value that is responsive to the characteristic of the aqueous solutionand that is non-responsive to absolute intensity values of the reflected light. The testpad may be supported on an opaque and non-reflective substrate (28) that cooperateswith an opaque edge portion (14E) of a test element placement member (14B) andassociated side walls (14W) of the device to minimize the impingement of ambient lightonto the test pad during interrogation.

申请人：HACH CO

地址：US

国籍：US

代理机构：Kenrick, Mark Lloyd

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