Patent ID: 7247492
Filing Date: 2007-07-24
Classification: B01L,G01N

Abstract:
1. A method for visually monitoring a chemical substance, comprising: disposing the chemical substance in a vessel that includes a base portion, a wall portion extending away from the base portion and having at least one transparent region, and an interface region at an interface between the wall portion and the base portion, the base portion, the wall portion and the interface region defining an inner surface and an outer surface opposite the inner surface, wherein the chemical substance is disposed adjacent to the inner surface; positioning the chemical substance at least proximate to a background material incorporated into the vessel with the background material covering at least part of the base portion and at least part of the interface region, wherein the background material is positioned between the inner surface and the outer surface, between the outer surface and a protective coating, or between the inner surface and the chemical substance; disposing a chemical indicator in the vessel; disposing a titrating substance in the vessel; stirring the contents of the vessel; and detecting an equivalence point of the contents of the vessel by comparing an appearance of the chemical substance through the inner and/or outer surface of the vessel wall while the chemical substance is positioned adjacent to the background material and determining an amount of the titrating substance added to the vessel when the contents of the vessel changes from a first color to a second color.