Ion selective electrode comprising a porous tube

Details Ion selective electrode comprising a porous tube Ion selective electrode comprising a porous tube

G - Physics

01

N

324/23

G01N 27/333 (2006.01) G01N 27/40 (2006.01)

Patent

CA 1303129

ABSTRACT In a flow-through electrode assembly having as an essential element a tube for the passage of liquid sample through said assembly and a membrane comprising matrix of an organic plastic material containing a non-volatile solvent plasticizer and an ion-active material dissolved in said solvent plasticizer the improvement which comprises utilizing as said tube and membrane a porous tube in which the pores are impregnated with said membrane matrix, said porous tube comprising a material which is essentially non-reactive with the solution to be tested and in which pores are generally uniformly distributed throughout said tube, said pores communicating between the inside of said tube and the exterior of said tube and having a maximum diameter of about 100 microns, said plasticizer being essentially non-reactive with and a non-solvent for said tube material.

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