A liquid-for-analysis monitor

Disposition of a wrong liquid for analysis or a liquid for analysis connected to a wrong pipe is detected as abnormal use. A liquid-for-analysis monitor includes: a weighing scale that weighs a container that contains a liquid as a liquid for analysis that needs to be used in analysis; a density storing part that stores a density rho of the liquid for analysis; and a liquid-for-analysis determining part configured to obtain a variation delta M between a weight of the container weighed by the weighing scale before a decreasing operation that decreases the liquid for analysis and a weight of thecontainer weighed by the weighing scale after the decreasing operation, and determine whether the liquid for analysis has been normally used in the decreasing operation or not, based on the obtainedvariation delta M, a volume V of the decrease in the liquid in the container in the decreasing operation, and the density rho of the liquid for analysis stored in the density storing part. 本发明提供一种分析用液体监视装置，能够在分析用液体的设置、配管连接存在错误