Patent ID: 8197755
Filing Date: 2012-06-12
Classification: B01L,G01N,Y10T

Abstract:
1. A device for automated monitoring of chemical characteristics of water, said device comprising: at least one continuous indicator strip having a multiplicity of separate individual sequential test sections along the surface thereof, said strip including a multiplicity of chemically inert calibration sections interposed between some, but not all, of said multiplicity of test sections, each of said test sections being impregnated with a color change agent sensitive to a substance of interest for sequential repetitive testing of water samples for the presence of said substance of interest in combination with a dispenser for holding and feeding said at least one strip; at least one take-up spool electrically driven for drawing said at least one strip from said dispenser; at least one water feed outlet for sequentially dispensing drops of sample water onto test sections of said at least one strip; at least one electro-optical sensor positioned to detect color changes in said test sections occurring as a result of contact with a drop of said sample water; a controller unit connected to said at least one sensor for noting and recording said changes, and a fluid circuit to provide said sample water to said at least one water feed outlet, said fluid circuit comprising: