Translation of "Liquid junction" in German

A required undetachably fastened and preferably gas and liquid tight areal junction must exist between the metal disk and the elastomer part of the sealing means of the invention, so that a junction element handled as a unit, namely the sealing means, shall be obtained.

At the liquid-air junction, the laser light cone 16 is totally reflected, so that the liquid jet 6 serves as an extension of the light-conducting fiber 3.

To that end, it is known to install a transition—also known as a “liquid junction” and referred to here as a “junction” between the half cell and the measurement medium, the junction being embodied for instance as a porous diaphragm.

The problem involving difficulties consists in the gas- and liquid-tight junction between the ceramic active surface and the housing, which must fulfill high requirements.

Furthermore, the sensor may comprise a reference electrode system with the internal electrolyte, a reference electrode and the electrolyte bridge or liquid junction.

Furthermore, bunches of platinum wire or open-junction or single-pore systems may also be used as liquid junction, the latter particularly along with a thickened internal electrolyte such as a hydrogel, for example.

Furthermore, the sensor may comprise a duct in the end piece as an electrolyte bridge or liquid junction through which during operation the measuring medium is in contact with an internal electrolyte.

The liquid junction between the medium-facing region 11 and a medium-averted region 12 forms a shoulder 13 in which a duct 14 is configured, in which a diaphragm 15 of a reference electrode configured in the sensor is arranged during operation.

Gas bubbles occurring in the electrochemical cleaning of the substrate 3 or the counter electrode 4, in given cases, for example, due to hydrogen or oxygen evolution on one of the electrodes, are drained in the direction of flow (compare the arrows of FIG. 4 b)) of the electrolyte liquid from the junction 18 via the drains 130, 140 away from the duct system of the microfluidics system.

The liquid junction between the KCl electrolyte contained in the duct section 20 and the cleaning electrolyte accommodated in the duct section 10, 15 at the junction 12 between the duct section 10 and the duct section 20 forms a diaphragmless, electrolyte bridge, via which the reference electrode 2 is connected with the substrate 3 .

In one kind of reference electrode, a liquid reference electrolyte is contained inside a housing, for example an aqueous solution of potassium chloride which can be brought into contact with a liquid measurement medium by way of a liquid connection (also referred to as “liquid junction”).

With polymer used as the inner solution, the liquid junction is large (1.0 mm to 1.5 mm), and there are 2 single pores, which prevent clogging.

These electrodes provide advantages even at titration in non-aqueous media, because it is not possible that LJPs (liquid junction potentials) can form.

Suitable materials for the porous material are, for example, zirconium oxides or silicates or other known porous “liquid junctions”, for example porous sintered materials, wood and natural fibre materials, asbestos fibre bundles, fibre bundles, especially of celluloses or/and cotton wool, cotton wool bundles, twisted wires, for example twisted Pt wires, porous glasses, for example CPG (“controlled pore glass”), in particular Vycor, what is known as a “thirsty glass” (Dow Corning) which has controlled pores, glass sieves, porous silica gels or sintered porous polymers, such as Teflon or polypropylene.