Horiba Advanced Techno, Co., Ltd.

Olympus Corporation

Yoshihiko Kawaguchi

Satoko Kai

Hideto Onishi

Shintaro Suzuki

Akihisa Ogawa

Hiromasa Akahori

Yumiko Awau

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.

Peracetic acid concentration meter

An endoscope reprocessor includes a concentration sensor including a concave section in which a sensing section is housed and a permeable membrane configured to cover the concave section, a pressure resistant container in which the concentration sensor is housed, a medicinal-solution lead-in section configured to introduce a medicinal solution into the pressure resistant container, and a pressure adjusting section configured to adjust pressure such that an internal pressure of the concave section is low compared with an internal pressure of the pressure resistant container.

Endoscope reprocessor

An endoscope reprocessor includes a concentration sensor including a concave section in which a sensing section is housed and a permeable membrane configured to cover the concave section, a medicinal solution tank, to an inside of which at least the permeable membrane is exposed and on the inside of which a disinfection solution is stored, and a heating section configured to heat at least the permeable membrane.

Endoscope reprocesssor

A main object of the present invention is to provide a membrane covered type peracetic acid concentration meter that can prevent various common problems, including problems that occur in the event of an internal solution leak into a sample solution. The membrane covered type peracetic acid concentration meter adapted to measure the concentration of peracetic acid in the sample solution includes: a membrane that allows peracetic acid to permeate; and the internal solution that dissolves peracetic acid having permeated the membrane. In addition, as the internal solution, a buffer solution having a buffering action on hydrogen ion concentration is used.

Growing community of inventors

Kyoto, Japan

Yoshihiko Kawaguchi