公开(公告)号：US3707331A

公开(公告)日：1972-12-26

申请号：US3707331D

申请日：1971-03-29

Applicant: CARY INSTRUMENTS

Inventor： GEORGE KENYON P ,  HAWES ROLAND C

IPC: G01N21/03 ,  G01N1/10 ,  G01N21/24

CPC classification number: G01N21/0303

Abstract: A concentration difference cell adapted for use with spectrophotometer apparatus producing a light beam, the cell comprises: A. FIRST AND SECOND CHAMBERS INCLUDING WINDOWS LOCATED TO PASS THE BEAM TRANSMITTED SUCCESSIVELY THROUGH THE CHAMBERS, B. SAID CHAMBERS HAVING ASSOCIATED BEAM PATH DIMENSIONS, THE BEAM PATH DIMENSION OF THE FIRST CHAMBER BEING ADAPTED TO INCREASE WHILE THE BEAM PATH DIMENSION OF THE SECOND CHAMBER DECREASES AND IN RESPONSE TO MOVEMENT OF AT LEAST ONE WINDOW, WHEREBY THE VOLUME OF THE FIRST CHAMBER REMAINS PROPORTIONAL TO THE INCREASE IN THE BEAM PATH DIMENSION OF THE FIRST CHAMBER, AND THE SUM OF THE BEAM PATH DIMENSIONS OF THE FIRST AND SECOND CHAMBERS REMAINS CONSTANT, C. THE CHAMBERS ARRANGED IN SUCH RELATION THAT A PREDETERMINED QUANTITY OF A FIRST LIQUID IN THE FIRST CHAMBER MAY BE DILUTED BY INTRODUCTION INTO THE FIRST CHAMBER OF A QUANTITY OF AUXILIARY LIQUID ACCOMPANIED BY MOVEMENT OF SAID ONE WINDOW TOWARD THE SECOND CHAMBER CONTAINING SECOND LIQUID, THE REFRACTIVE INDEX OF THE LIQUID IN THE FIRST CHAMBER BEING KEPT SUBSTANTIALLY EQUAL TO THE REFRACTIVE INDEX OF THE SECOND LIQUID SO LONG AS SAID BEAM PATH DIMENSION OF THE FIRST CHAMBER IS AN APPRECIABLE PART OF SAID SUM.

Abstract translation: 一种适于与产生光束的分光光度计装置一起使用的浓度差异单元，所述单元包括：