초록 ▼

A chemical analyzer has turn tables respectively carrying reaction vessels, sample containers and reagent containers disposed thereon in circular rows. A sample pipetting mechanism and a reagent pipetting mechanism are provided to transfer predetermined amounts of sample and reagent solution from a

A chemical analyzer has turn tables respectively carrying reaction vessels, sample containers and reagent containers disposed thereon in circular rows. A sample pipetting mechanism and a reagent pipetting mechanism are provided to transfer predetermined amounts of sample and reagent solution from a sample container and from a reagent container into a reaction vessel. The thus transferred sample and reagent solution are mixed in the reaction vessel by a stirrer comprising a piezoelectric element which is disposed in non-contacting relationship to the sample and reagent solution in the reaction vessel and is electrically energized to generate a sound wave which causes a circulating flow of the reagent solution in the reaction vessel whereby the sample and the reagent solution are mixed in a non-invasive manner.

대표청구항 ▼

[ What is claimed is:] [1.] In a chemical analyzer including a reaction vessel, means for feeding a sample into said reaction vessel through an upper opening thereof, means for feeding a reagent into said vessel through the upper opening thereof, and means for measuring a physical property of said s

[ What is claimed is:] [1.] In a chemical analyzer including a reaction vessel, means for feeding a sample into said reaction vessel through an upper opening thereof, means for feeding a reagent into said vessel through the upper opening thereof, and means for measuring a physical property of said sample during or after reaction of said sample with said regent, the improvement comprising sound wave generating means disposed in non-contact relationship with and outside of said reaction vessel for directing sound waves toward said reaction vessel in such a manner as to induce acoustic straight flow within said vessel at a level sufficient to mix said sample and said reagent.