Horiba, Ltd.

Seiji Usui

Takeshi Kohno

Kunio Terada

Narihiro Oku

Hiroaki Uematsu

Hiroaki Takahasi

Masakatu Imaki

Hidehiko Hagiwara

Flow through type liquid analyzer

A packing which includes a plurality of seal portions integrally formed on an annular elastic sheet. The seal portions are spaced about the circumference of the sheet and project from one side surface of the sheet. Each seal portion has a through hole extending entirely through the sheet parallel to the center axis of the sheet. In the preferred embodiment, the packing is used in a rotary change-over valve and each seal portion has an annular rib at its free end which is adapted to fit in a corresponding hole in a rotary valve inlet element with the packing held in a recess in the inlet element between the inlet element and a rotary valve outlet element.

Packing having multiple seal portions

A standard solution for simultaneously calibrating a plurality of ion electrodes for determining a plurality of ion electrodes for determining a plurality of ions including at least potassium ions and calcium ions in blood, the improvement wherein the concentration of the standard solution for a potassium ion electrode and a calcium ion electrode is adjusted in accordance with the following equations: ##EQU1## As for potassium ion,

Standard solution for simultaneously calibrating a plurality of ion

A flow through type glass electrode has a resin body having a hollow interior and having bores in the opposite ends thereof extending from the outside into the interior and aligned with each other, an internal electrode positioned in the interior, a straight unitary hollow glass capillary tube extending through the bores and interior and having a uniform diameter sample flow passage therethrough, sealing members in sealing engagement around the tube and in sealing engagement in the bores where the bores open into the interior, plugs closely fitted around the tube and closely fitted in the bores where the bores open out of the body and being spaced from the sealing members along the bores to define an insulating material receiving space therebetween and extending along each bore, an insulating material filling the insulating material receiving space, and an internal liquid filling the interior.

Flow through type glass electrode

A reference electrode includes a holder member having therein a chamber. An inner electrode is positioned within the chamber, the inner electrode being connected to an electric lead extending through an upper end of the holder member. The holder member has a lower end which is closed by a liquid junction in the form of a hydrophilic polypropylene membrane coated with a surface active agent. The membrane has an integral flange which fits around the lower end of the holder member, and the membrane is readily selectively removable from the lower end of the holder member.

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Kyoto, Japan

Seiji Usui