Method and test device for detecting organic corrosion...

G - Physics – 01 – N

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G01N 31/22 (2006.01) G01N 21/78 (2006.01)

Patent

CA 2723297

A test substrate for determining concentration of an organic corrosion inhibitor in a coolant fluid is provided. The test substrate comprises a porous substrate having at least a surface treated with a sufficient amount of at least a metal salt for re-acting with a molar equivalent amount of the organic corrosion inhibitor in a representative sample of the coolant fluid, and at least a color indicator. The color indicator reacts with the metal salt and/or the organic corrosion inhibitor, forming an irreversibly colored complex and causing a color change in the test substrate.

L'invention porte sur un substrat d'essai destiné à déterminer la concentration d'un inhibiteur de corrosion organique dans un fluide de refroidissement. Le substrat d'essai comprend un substrat poreux ayant au moins une surface traitée par une quantité suffisante d'au moins un sel métallique suffisante pour réagir avec une quantité molaire équivalente de l'inhibiteur de corrosion organique dans un échantillon représentatif du fluide de refroidissement, et au moins un indicateur de couleur. L'indicateur de couleur réagit avec le sel métallique et/ou avec l'inhibiteur de corrosion organique, en formant un complexe irréversiblement coloré, et en provoquant un changement de couleur dans le substrat d'essai.

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