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HORIBA's superior electrode technology has produced unparalleled tough pH glass bulbs and unique flat sensors. Electrodes have different designs to cater a wide range of applications - from pure water to complex samples. Select the suitable electrode that is specially designed for your application.

3-in-1 Electrode (Waterproof, Silver Ion Trap Construction)

【3-in-1 electrodes incorporate a glass electrode and a reference electrode-plus a temperature compensation electrode -into a single unit】

pH meter and electrode combination table

Standard ToupH electrode 9615-10D

Quick stability, and reduction of drift.

No more worries about the timing of your measurement value readings.

Sleeve ToupH electrode 9681S-10D

Stable measurement can also be achieved for highly viscous samples.

This glass-body, refillable pH electrode with temperature sensor can measure samples as low as 50µL.

Compatible with extremely small sample containers (e.g., microtubes)Temperature sensor is placed beside the bulb for quick...

Long ToupH electrode 9680S-10D

251 mm length & 8 mm diameter.

The long, thin design makes this electrode perfect for measuring in large containers and test tubes.

ISFET Electrode

Flat ISFET pH electrode 0040-10D

The sensor is located on the flat surface of the tip, with less than a 100 μm difference from the housing.

Replacement for 0040-10D

Plastic Body

Plastic body pH electrode 9625-10D

Cased in a plastic body to enable field measurements.The slide-type internal solution filler permits submerged measurements in depths up to 1m (for up to 30 minutes)

WaterproofPb free

(Recommended)Suitable for measurements for...

Quick and stable measurement is possible for low conductivity samples or those with low buffering ability, such as tap water. Suitable for water quality testing at water treatment plants.

Long life capable of measuring about 1000 times. Easy maintenance and long-term reliable measurement is possible. Suitable for management of hydrofluoric acid contained water that is discharged after etching process.

A strong alkali resistance achieves about five times longer stability than that of our conventional products. It is suitable for the strong alkali samples such as plating solution.

Uses a sleeve for the liquid junction, improving the stability and repeatability. For measuring pH at high accuracy. (Standard accessory for model F-24II.) 

Uses a glass membrane highly sensitive to lowconductivity water and non-aqueous solvents. Movable sleeve used at the liquid junction. 

Needle electrode allows measurement of aqueous solutions too.

Combination Electrodes

【A combination electrode incorporating a glass electrode and  a reference electrode into single unit. Please use combination electrode with temperature compensation electrode.】

For measuring pH of a small amount of sample in a slender tube (more than 3.5 mm dia.) such as a NMR test tube.

Since the pH response membrane and the liquid junction are located on the same surface, pH values on the surfaces of skin, leather, paper, and leaves can be measured.

Glass Electrodes

【Reference electrodes and temperature compensation electrodes are needed for measurement glass electrode is used.】

Very durable minimum alkali errors. Most widely used for general pH measurements.

Uses a glass membrane highly sensitive to lowconductivity water and nonaqueous solvents. Can also be used for ordinary pH measurement.

Reference Electrodes

Suitable for a wide range of pH measurements since the resistance of the liquid junciton is small.

Suitable for measurements of liquid other than normal aqueous solutions, such as suspensions, emulsions, paste, and non-aqueous solutions. When the potassium chloride solution of the internal solution reacts with the sample,...

Temperature Compensation Electrodes

Used to automatically compensate the changes in the electromotive force of the pH electrode due to temperatures and also to measure temperatures.