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Electronic device for analyzing aqueous solutions

  • US 8,852,514 B2
  • Filed: 09/11/2013
  • Issued: 10/07/2014
  • Est. Priority Date: 08/08/2006
  • Status: Active Grant
First Claim
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1. A test element for determining a characteristic of an aqueous solution, comprising:

  • an opaque substrate;

    a first side of the opaque substrate comprising a non-reflective surface that is dark in color;

    a test pad on the first side of the substrate comprising a reagent responsive in color to a characteristic of an aqueous solution; and

    ,wherein the substrate substantially, uniformly covers the test pad.

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