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Metrohm®
Surfactrode® Electrodes
Metrohm Surfactrode electrodes—specialized electrodes for the analyses of all
types of surfactants
Because there is no universal electrode that can perform every type of surfactant
analysis, Metrohm offers five Surfactrodes so you can select the Surfactrode that is best suited for
your particular application. Whether determining anionic, cationic or nonionic surfactants, or running
your analysis in aqueous or in a two-phase medium, Metrohm Surfactrodes get the job done.
Two-phase surfactant titrations
The advantage of using Surfactrodes for two-phase titrations over classic Epton two-phase
titrations is that Surfactrodes are resistant to organic solvent—you get the same results with
none of the handling issues.
Over the years, Metrohm has become a market leader in the potentiometric analysis
of surfactants. In cooperation with Messrs. Th. Goldschmidt AG in Essen, Germany, Metrohm has accumulated
a wealth of knowledge that can be found in its Application Bulletins.
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Surfactrode Resistant
- Determination of anionic surfactants in raw materials and formulations
- Determination of cationic surfactants in raw materials and formulations
- Cosmetic formulations with fats and oils
- Industrial oils
- Resistant to chloroform for classic analysis
- Works in MIBK
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| Surfactrode Resistant 6.0507.130 |
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Surfactrode Refill
- Refillable electrode tip for a “new” electrode when needed
- Determination of anionic surfactants in raw materials and formulations
- Determination of cationic surfactants in formulations and raw materials
- Well suited for powdered detergents and soaps
- Works with difficult samples that are titrated, where pH is above 10
- Ideal for high-salt content samples, such as electroplating baths
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| Surfactrode Refill 6.0507.140 |
Aqueous surfactant titrations
These Surfactrodes can handle a wide range of applications—their limited resistance
to organic solvents make them best suited for analysis of samples in aqueous environments.
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NIO (nonionic) Surfactrode
- Nonionic surfactants in raw materials and formulations
- Pharmaceutical compounds
- Determination of betains
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| NIO Surfactrode 6.0507.010 |
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Ionic Surfactrode
- Best suited for anionic surfactants in raw materials and formulations
- Determination of cationic surfactants in raw materials and formulations
- Robust solid state design
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| Ionic Surfactrode 6.0507.120 |
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Cationic Surfactrode
- Best suited for cationic surfactant determinations in raw materials and formulations
- Can also be used for anionic determinations
- Stable and robust solid state design
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| Cationic Surfactrode 6.0507.150 |
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