Flat container type analytical instrument

摘要

An integral flat container type analytical instrument for use in the quantitative analysis of an analyte present in a liquid sample which has a reaction chamber and an observation chamber associated with each other so as to allow a liquid to flow therebetween characterized in that: at least part of the wall of said reaction chamber is made of a flexible material; said observation chamber is provided with wall parts which are made of a transparent material and opposed to each other in such a manner that their relative positions are fixed to provide a given light path; and no partition wall preventing the free flow of the liquid substantially exists between said reaction chamber and said observation chamber. A method for optical measurement of an analyte in a liquid sample utilizing said analytical instrument is also disclosed.