PH PROBE Russian patent published in 1998 - IPC

FIELD: medical engineering. SUBSTANCE: device has measuring ring-shaped antimony electrodes rigidly mounted on thin-walled bushings, flexible tube attached to the bushings, comparison chloro- silver electrode placed in nonmetal casing with two chambers connected to each other by means of detachable connection member and electrolytic key, and conductors coming through the flexible tube and connecting the electrodes to a plug. The first chamber containing the chloro-silver electrode and potassium chloride powder is rigidly connected to the second removable chamber by means of tight junction member. The second chamber has electrolytic key as an opening and is filled with aqueous solution of potassium chloride. The first chamber is connected to the second chamber through flexible sealing ring. PH probe additionally has detachable auxiliary chamber having no key. EFFECT: long service life; high reliability. 3 cl, 2 dwg