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

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

G - Physics

01

N

150/1, 324/23

G01N 33/52 (2006.01) G01N 9/00 (2006.01) G01N 33/487 (2006.01)

Patent

CA 1138310

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 strongly acidic or strongly basic polyelectrolyte, a buffer substance capable of providing a pH of about 5.5, and an indicator means capable of producing a detectable response to ion exchange between the poly- electrolyte 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.

353850

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