DEVICE AND LIQUID COMPOSITION FOR THE DIAGNOSIS OF URINARY TRACT INFECTIONS

A device for a colorimetric diagnosis of urinary tract infections, characterized in that it comprises at least one vial wherein a liquid analysis mixture is housed comprising a water part and an organic part immiscible with the water part and having a density lower than that of the water part. The water part is composed of a reagent mixture comprising (a) nutrient substances comprising an amino acid source selected from the group consisting of meat infusions or peptones, vegetable peptones, casein hydrolysates, tryptose, tryptones and yeast extract; (b) at least one redox indicator with a potential ranging from −100 to +500 mV; and (c) a buffer system able to maintain the pH in a range from 6.0 to 8.0. The reagent mixture comprises from 94.0 to 99.9% by weight of the nutrient substances and from 0.1 to 6.0% by weight of the redox indicator.