Patent ID: 6770483
Filing Date: 2004-08-03
Classification: C02F,G01N

Abstract:
A method of making a determination for a presence of a harmful water-soluble multi-valent, and ionically reducible metal contaminant in water, said method comprising:a) introducing into a sample of the water to be tested a composition comprising a water-soluble, multi-valent, metal or metal anion reducing agent which will reduce the metal contaminant to a lower valence state with the reducing agent becoming oxidized to a higher valence state, and where the metal or metal anion reducing agent is responsible for substantially all of the metal contaminate reduction; b) maintaining said water containing composition at a pH substantially below 7.0; c) allowing for a physically observable change in said water to provide readily visual indication of the presence of the potentially harmful metal contaminant based on said change.