METHOD AND DEVICE FOR THE DETERMINATION OF POLYMERIC BIGUANIDES IN AQUEOUS FLUIDS

摘要

A test method and device is described for determining biguanides in aqueous fluids such as swimming pool water which involve contacting the fluid with a matrix incorporating a pH sensitive indicator material which exhibits the biguanide error effect. A buffer is advantageously used to maintain the test system within a defined constant pH range to eliminate the effect of pH changes on the test system.