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Methods, devices, systems, and compositions for detecting gases

  • US 10,393,666 B2
  • Filed: 03/12/2013
  • Issued: 08/27/2019
  • Est. Priority Date: 03/12/2012
  • Status: Active Grant
First Claim
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1. A composition comprising:

  • a dye present in an amount of about 0.001% to about 0.1% by weight of the composition;

    a buffer present in an amount of about 0.5% to about 10% by weight of the composition;

    an alkaline material present in an amount of about 0.1% to about 10% by weight of the composition;

    a nitrogen containing compound configured to provide an increase in a colorific response present in an amount of about 0.01% to about 2% by weight of the composition; and

    a water-attractive component present in an amount of about 5% to about 50% by weight of the composition.

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