| CPC A61L 2/28 (2013.01) [G01N 21/80 (2013.01); G01N 31/226 (2013.01)] | 20 Claims |
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1. A container for determining whether an acceptable concentration of a sanitizing or disinfecting composition placed in the container is present using only an at-a-glance determination, the container comprising:
a base including a centrally located concave lug, an upper rim, and at least one upstanding sidewall therebetween;
a flexible retention arm at an interior of the container, attached to the at least one upstanding sidewall and/or upper rim;
a pH sensitive indicator comprising a dye;
wherein the pH sensitive indicator is removably secured to the container at an elevation such that an upper edge of the pH sensitive indicator lies below a lower surface of the upper rim, by way of the flexible retention arm;
wherein the dye is an azo dye, bromothymol blue, thymol blue, m-cresol purple, phenol red, xylenol blue, xylenol orange, or a combination thereof;
wherein the dye is bound to or coated on a cellulose-based substrate removably attached to a pail or a bucket; and
wherein the dye exhibits a color change at a pH of about 4.5 or less; and
at least one outer transparent surface through which the pH sensitive indicator can be observed;
wherein the base, the upper rim, and the at least one standing sidewall are opaque and the at least one outer transparent surface comprises one or more windows, a majority of an external surface area of the container is opaque and a minority of the external surface area of the container is transparent, and an outer portion of the at least one outer transparent surface is flush with adjacent portions of the external surface of the container.
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