ELECTRODE SYSTEM FOR MEASURING ION ACTIVITIES IN STREAM OR SAMPLE

• US 3,616,409 A
• Filed: 06/07/1968
• Issued: 10/26/1971
• Est. Priority Date: 06/07/1968
• Status: Expired due to Term

• Current Assignee: Daniel C. Tosteson
• Original Assignee: Daniel C. Tosteson
• Inventors: Tosteson, Daniel C.
• Primary Examiner(s): Kaplan, G. L.
• Application Number:
  US04/735,286
• Time in Patent Office: 1,236 Days
• Field of Search: 204/195,1.1 128/2.1
• US Class Current: 204/409
• CPC Class Codes: G01N 27/3335 the membrane containing at least one organic component G01N27/3271 takes precedence; aspects concerning the enzyme reagent in enzyme electrodes C12Q1/001

Abstract

Continuous measurement of the activity of a particular chemical species of ion in a continuously flowing aqueous solution is obtained in a closed electrode system in which the flow is directed past a sensing electrode, the sensing electrode being convertible to measuring similar activity in static solutions. The selective element embodies a mechanically stable layer which contains an ion selective macrocyclic compound and which layer is established by a surface active agent between the aqueous solution and a nonaqueous phase, the agent and compound being dissolved in a solvent to form the nonaqueous phase.

Claims

2. A system as claimed in claim 1 wherein said container includes a first base member providing said conduit means and a second member providing said chamber and mounting said membrane means and being removable from the first member, said second member being further formed in the manner of a reference electrode and when removed from said base member being adapted when dipped in a static said aqueous solution to establish said layer contact and produce said voltage, thus adapting said second member for utility in both Static and stream measurements.