In a glycated hemoglobin analyzer, based on a liquid chromatography, having a separation column for separating a hemoglobin component, a detector for detecting a separated component, a liquid supplying pump for supplying an eluent, and a sampling part for supplying a sample to be analyzed to an analyzer, characterized in that the sampling part being constructed with a flow passage change-over mechanism constructed such that a flow passage is formed by use of a flow passage change-over valve of the rotary type. The flow passage change-over valve is a non-electromagnetic type valve, not using an electromagnetic valve.
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