公开(公告)号：US3145339A

公开(公告)日：1964-08-18

申请号：US4242160

申请日：1960-07-12

Applicant: BECKMAN INSTRUMENTS INC

Inventor： GARDNER DOUGLAS B ,  KUFFER FERNAND B

IPC: G01N30/86

CPC classification number: G01N30/8651

公开(公告)号：US3150517A

公开(公告)日：1964-09-29

申请号：US11972861

申请日：1961-06-26

Applicant: BECKMAN INSTRUMENTS INC

Inventor： KUFFER FERNAND B ,  DORA RALPH A

IPC: G01N30/20

CPC classification number: G01N30/20 ,  G01N2030/204 ,  Y10T137/86558

公开(公告)号：US3630875A

公开(公告)日：1971-12-28

申请号：US3630875D

申请日：1970-03-10

Applicant: BECKMAN INSTRUMENTS INC

Inventor： KUFFER FERNAND B

IPC: G01N27/42 ,  G01N25/56

CPC classification number: G01N27/423

Abstract: AN HYGROMETER ELECTROLYTIC CELL HAVING AS AN ELECTROLYTE AN ANHYDRIDE FORMED FROM AN ACID OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, BORON, GROUP IV-A ELEMENTS AND GROUP V-A ELEMENTS. THE ACID HAS BLOCKED POLYMERIZATION SITES AND CONTAINS NOT MORE THAN THE EQUIVALENT OF 19 CARBON ATOMS.