Liquid membrane electrode
First Claim
1. A flow-through electrode assembly comprising a tube or organic plastic material having a cylindrical tube wall defining therewith a cylindrical liquid sample flow path through said electrode, characterized in that said plastic material of said tube is interrupted and a membrane defines said cylindrical tube wall at said interruption of said plastic material, said membrane comprising a matrix of an organic plastic material containing a non-volatile solvent plasticizer and an ion exchange material dissolved in said solvent plasticizer, further characterized in that said membrane is chemically bonded to and integral with the remainder of said tube wall and further characterized in that the interior of said tube wall, including said membrane portion, comprises a smooth, continuous, cylindrical surface defining a flow path for said liquid sample.
3 Assignments
0 Petitions
Accused Products
Abstract
An electrode assembly comprising an organic plastic sample flow-through tube, a portion of the wall of which comprises a membrane, the membrane comprising a matrix of an organic plastic material containing a non-volatile solvent-plasticizer and an ion exchange material dissolved in the solvent plasticizer, the membrane chemically bonded to and integral with said tube. The method of forming the membrane to the tube comprises dissolving the matrix material, the ion exchange material and the non-volatile plasticizer in a volatile solvent, placing the resulting solution on a surface and evaporating the volatile solvent to form the membrane, contacting an edge of the tube to the membrane material, contacting the tube edge with said volatile solvent and allowing the solvent to evaporate.
23 Citations
13 Claims
- 1. A flow-through electrode assembly comprising a tube or organic plastic material having a cylindrical tube wall defining therewith a cylindrical liquid sample flow path through said electrode, characterized in that said plastic material of said tube is interrupted and a membrane defines said cylindrical tube wall at said interruption of said plastic material, said membrane comprising a matrix of an organic plastic material containing a non-volatile solvent plasticizer and an ion exchange material dissolved in said solvent plasticizer, further characterized in that said membrane is chemically bonded to and integral with the remainder of said tube wall and further characterized in that the interior of said tube wall, including said membrane portion, comprises a smooth, continuous, cylindrical surface defining a flow path for said liquid sample.
- 8. The electrode assembly claimed in claim 8 further characterized in that said ion exchange material comprises valinomycin.
-
13. A flow-through electrode assembly comprising a tube of organic plastic material having a tube wall defining therewith a tubular liquid sample flow path through said electrode, characterized in that said plastic material of said tube is interrupted and a membrane defines said tube wall at said interruption of said plastic material, said membrane comprising a matrix of an organic plastic material containing a non-volatile solvent plasticizer and an ion exchange material dissolved in said solvent plasticizer, further characterized in that said membrane is chemically bonded to and integral with the remainder of said tube wall, and further characterized in that the interior of said tube wall including said membrane portion comprises a smooth, continuous surface of uniform cross-sectional configuration and dimensions defining a flow path for said liquid sample.
Specification