Composition, test device and method for determining the...

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150/1, 150/8

G01N 9/36 (2006.01) G01N 13/04 (2006.01) G01N 30/00 (2006.01) G01N 31/22 (2006.01) G01N 33/52 (2006.01)

Patent

CA 1141275

ABSTRACT OF THE DISCLOSURE A composition is disclosed for determining the ionic strength or specific gravity of an aqueous test sample, the composition comprising a weakly acidic or weakly basic polyelectrolyte which is at least partially neutralized, and an indicator means capable of producing a detectable response to ion exchange between the polyelectrolyte and the sample. The test device comprises a carrier matrix incorporated with the test composition, and the method for its use comprises contacting an aqueous test sample with the device and observing a detectable response.

337720

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