Sample water dilution device and sample water dilution method

摘要

To be able to measure dilution magnification (coloring degree) conforming to the regulation standard of "appearance" with high accuracy without relying on organoleptic measurement and adopting no expensive apparatus, Allows automation of dilution.SOLUTION: The sample water dilution apparatus 1 comprises a detection tube 2 in which a dilution water flow path 10 and a drainage flow path 11 communicate with each other, a transmitted light amount detection section 3 for detecting the amount of transmitted light in the detection tube 2, A water amount detection unit 4 for detecting the amount of water, a water dilution unit 4 for diluting the sample water stored in a specified amount in the detection pipe 2 with the dilution water flowing from the dilution water flow path 10 based on detection signals from the water amount detection unit 4 and the transmitted light amount detection unit 3 , And a flow path control unit 6 for controlling the flow of the dilution water flow path 10 and the drainage flow path 11 based on the output of the calculation processing unit 5 , The flow path control unit 6 controls the circulation of the drainage flow path 11 so as to cause the specified amount of the diluted sample water in the detection pipe 2 to remain and to drain the water, then controls the flow in the dilution water flow path 10, 2 was added diluted water of the set amount to the diluted sample water remaining in the prescribed amount in 2, and further diluted sample water was obtained .(FIG.