Abstract: There is provided an automated analyzer which has plural liquid tanks connected with a dispensing probe and which can efficiently switch the operative liquid tank according to measurement item. The automated analyzer includes a liquid dispenser having a dispensing probe and a pump capable of aspirating and dispensing a liquid from and into an open end of the probe, the liquid dispenser being operative to cause the liquid aspirated in the probe and a probe internal liquid to be dispensed into aliquot receptacles. The automated analyzer also includes; an internal liquid supply device having plural liquid tanks in which probe internal liquids corresponding to measurement items are stored, the supply device being operative to supply a probe internal liquid into the dispensing probe from one of the tanks. The automated analyzer further includes an input section and an operation controller.

Abstract: There is provided an automated analyzer which has plural liquid tanks connected with a dispensing probe and which can efficiently switch the operative liquid tank according to measurement item.

Abstract: Method for surface treatment of steel sheet which comprises coating the steel sheet with 5- 200 mg/m.sup.2 of a treating solution consisting essentially of at least one member of the group consisting of linseed oil, cottonseed oil, dioctyl sebacate glycol mono-oleate, and glycol di-oleate and a mineral oil, the mineral oil constituting about 0.5- 15% by volume of the solution.