Composite semipermeable membrane and method for producing same
US-2018311623-A1 · Nov 1, 2018 · US
Peracetic acid concentration meter
US12436128B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12436128-B2 |
| Application number | US-202017637545-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 12, 2020 |
| Priority date | Aug 28, 2019 |
| Publication date | Oct 7, 2025 |
| Grant date | Oct 7, 2025 |
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- Title
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Abstract
Official abstract text for this publication.
There is provided a peracetic acid concentration meter that inhibits contamination of a working electrode surface by organic material, and makes it possible to measure a peracetic acid concentration more accurately than is possible conventionally. The present invention is a diaphragm-type peracetic acid concentration meter that measures a peracetic acid concentration in a test solution and is characterized in being provided with a diaphragm that is permeable to peracetic acid, an internal solution in which peracetic acid that has permeated through the diaphragm is dissolved, a working electrode and a counter electrode that are immersed in the internal solution, and a permeation-inhibiting layer that is laminated onto a surface of the diaphragm on a side thereof that is in contact with the test solution, and that inhibits permeation of organic material.
First claim
Opening claim text (preview).
What is claimed is: 1. A diaphragm-type peracetic acid concentration meter that measures a peracetic acid concentration in a test solution comprising: a diaphragm that is permeable to peracetic acid; an internal solution in which peracetic acid that has permeated through the diaphragm is dissolved; a working electrode and a counter electrode that are immersed in the internal solution; and a permeation-inhibiting layer that is laminated onto a surface of the diaphragm on a side thereof that is in contact with the test solution, and that inhibits permeation of organic material, wherein the permeation-inhibiting layer is provided with a semipermeable membrane; and the permeation-inhibiting layer is further provided with a supporting substrate that supports the semipermeable membrane, wherein in the permeation-inhibiting layer, the supporting substrate is laminated onto a surface of the diaphragm on a side thereof that is in contact with the test solution, while the semipermeable membrane is laminated onto a surface of the supporting substrate on the opposite side from the diaphragm. 2. The peracetic acid concentration meter according to claim 1 , wherein the supporting substrate is a porous membrane. 3. The peracetic acid concentration meter according to claim 1 , wherein the semipermeable membrane is a membrane containing one or more types of components selected from a group made up of cellulose, acetyl cellulose, polyacrylonitrile, polytetrafluoroethylene, polyester-based polymer alloys and polysulfones. 4. A peracetic acid concentration measurement device comprising the peracetic acid concentration meter according to claim 1 . 5. The peracetic acid concentration measurement device according to claim 4 , further comprising a light source that irradiates ultraviolet light onto a surface of the peracetic acid concentration meter that is in contact with the test solution.
Assignees
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Classifications
Systems (G01N27/27 takes precedence) · CPC title
- G01N27/404Primary
Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid {, e.g. Clark-type oxygen sensors} · CPC title
- G01N27/4045Primary
for gases other than oxygen · CPC title
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Frequently asked questions
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- What does patent US12436128B2 cover?
- There is provided a peracetic acid concentration meter that inhibits contamination of a working electrode surface by organic material, and makes it possible to measure a peracetic acid concentration more accurately than is possible conventionally. The present invention is a diaphragm-type peracetic acid concentration meter that measures a peracetic acid concentration in a test solution and is c…
- Who is the assignee on this patent?
- Horiba Advanced Techno Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01N27/404. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Oct 07 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).