Electrodes with glass membranes - series 21

The glass membranes of these electrodes are made of suitable sensitive glass. The connection of the sensitive membrane with coaxial cable is realized by a liquid contact. The body of the electrode is made of low leach glass with higher chemical resistance and is screened by a metal foil.
BNC

Table of the pH and sodium electrodes parametres

Electrode Type Temp. 
range [°C]		 Max. el. 
resist. [MOhm]		 Conc. range [mol/l] Recom. ref. 
electrode		 Max. electrolyte 
leakage [ul/h]
pH 01-21 0-80 200 100 - 10-14 RCE 101 x
sodium 11-21 0-80 150 10-1 - 10-6 RAE 102 x
pH 01-21RX 0-80 200 100 - 10-14 RRE 131RX x
pH combined 01-29 0-80 200 100 - 10-14 x 10
pH small bulb 01-32 0-80 500 100 - 10-14 x 10
pH spear-tip 01-33 0-80 500 100 - 10-12 x 10
pH big spear 01-34 0-80 200 100 - 10-12 x 10
pH flat membrane 01-36 0-80 500 100 - 10-12 x 10
pH combined 01-29RX 0-80 200 100 - 10-14 x 10
pH spear-tip 01-33RX 0-80 500 100 - 10-12 x 10
sodium combined 11-29 0-80 150 10-1 - 10-6 x 10

pH combined electrodes - series 29

The electrodes have glass membranes and incorporated external reference system. The connection of the glass membrane with coaxial cable is carried through a liquid contact. The external Ag/AgCl reference system is incorporated in the outer part of the body of electrode. The external reference electrode is filled by 1 M KCl. The electrode body is made of a low leach glass with high chemical resistance against the majority of normally used chemicals.

pH combined electrodes with a small bulb - series 32

These types of electrodes are produced with a small bulb with a diameter of 6mm. They are suitable for pH determination in a small volume of samples. The reference ceramic junction is near the bulb.

pH spear-tip combined electrodes - series 33

The measuring part of the electrodes is spear-like shaped. In a close proximity of this spear there is an exit of external reference Ag/AgCl electrode. The electrodes are used for pH-measurements in soft materials (as cheese and meat).

pH combined big spear-tip electrodes - series 34

The measuring part of the electrodes is spear-like shaped with a diameter about of 12mm. In a close proximity of this spear there is an output of external reference Ag/AgCl electrode. The electrodes are used for pH measurements in agriculture.

pH combined flat membrane electrodes - series 36

The glass membrane is created by flat glass membrane with a diameter about of 6mm. The electrodes are used in pH determination of wet paper or skin.

Electrodes with added designation MR

These electrodes have a strike resistant bulb created by membrane with thick wall.

Electrodes with added designation P

These electrodes have a plastic body. The glass membrane is protected by a plastic wall.

Electrodes with added designation HP

These electrodes have a glass membrane created by special glass suitable for measuring pH in alkaline region.

Electrodes with added RX index

The RedoX inner reference system is used as a reference system. The adventage of these electrodes consists in a better behaviour during temperature changes.

Electrodes with added designation BJ

These are glass combined electrodes. The BNC connector is mounted in the head of the electrode.

Electrodes with added designation RCE

These are pH combined electrodes with an external saturated calomel reference system. The electrodes have a high potential stability of the reference system.

Other dimensions of electrodes

All types of glass electrodes we can make in another lengths than standard lengths figured here.

 
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