Liquid Exchange Method, Ingredient Extraction Method Using the Same, Composite Container and Autoanalyzer

Abstract

A liquid exchange method of exchanging liquids present around a magnetic substance is provided. The method serves to prevent a remaining liquid from transferring to a next step and a loss of the magnetic substance. Even when the liquid exchange method is applied to an autoanalyzer, the device structure will not be complicated. A vessel 11 in which a liquid 16 containing a magnetic substance 15, a vessel 12 containing a liquid 17, a magnetic substance move-mediating member 13 and also a magnet 18 are prepared. The magnet 18 is disposed at the exterior of the vessel 11, and the magnet 18 is moved to move the magnetic substance 15 on the inner wall face of the vessel 11 in order to take out the magnetic substance 15 from the magnetic substance containing liquid 16, to move the magnetic substance 15 from the inner wall face of the vessel 11 to the surface of the magnetic substance move-mediating member 13, and to move to the inner wall face of the other vessel 12 via the magnetic substance move-mediating member 13 so as to introduce the magnetic substance 15 into the liquid 17 in the vessel 12, thereby exchanging the liquids present around the magnetic substance 15.

Dependencies are inferred from the claim text.