Hydrogen Reference Electrodes
A reference electrode is a half cell with an electrode potential which is established quick, constant, reproducible and stable over time.
When specifying potentials, you should always state the reference electrode against which you determined the potential.
Description Reference Electrodes
The platinum-hydrogen reference electrode is the reference electrode of first choice for standard-compliant measurement of potentials.
Platinum-hydrogen electrodes are the only reference electrodes that directly measure hydrogen ion activity.
Our hydrogen reference electrode has a low resistance, so no shielded cables are necessary.
The reference electrode supplies itself with hydrogen gas from an internal source that can be easily replaced.
HydroFlex does not contain any internal electrolyte. This means there is no ion discharge and no diffusion potential. It requires low maintenance because no electrolyte needs to be refilled.
HydroFlex does not contain any toxic heavy metals.
Platinum Hydrogen Reference Electrode
If you want to measure conforming to standards you should use the platinum-hydrogen electrode. In doing so, the platinum-hydrogen electrode has to be connected to the negative pole (mass or com entrance).
Mass entrances are assigned a potential of zero. They represent the reference potential for all signal and operating voltages.
With the platinum-hydrogen reference electrode, the hydrogen potential depends on the pH value of the measurement solution.
Principle of Hydrogen Electrode HydroFlex
HydroFlex is a hydrogen reference electrode with an internal hydrogen source. Before the first use, the hydrogen electrode HydroFlex must be activated so that hydrogen production can start in the hydrogen generation cell. The arising hydrogen fills the PTFE-tube and leaks out of the platinum-palladium electrode, where – corresponding to the ions in the solution – a hydrogen potential sets. The hydrogen potential can be gripped at the gold-plated socket in the electrode head. Once activated, the electrode works continuously for 6 months.
Would you like to learn more about our hydrogen reference electrodes HydroFlex and Mini-HydroFlex?
Hydrogen Reference Electrode HydroFlex
The platinum-hydrogen reference electrode is the first choice to measure potentials conforming to standards. Here you will find some general information about it.
Mini Hydrogen Reference Electrode Mini-HydroFlex
We have further developed and reduced the size of our hydrogen electrode HydroFlex for use in confined spaces. Here you will find some general information about our Mini-HydroFlex.
Use of the Hydrogen Electrodes HydroFlex and Mini-HydroFlex
Here you will find out more about the electrolytes and solutions in which our hydrogen reference electrodes can be used. Also learn more about the use of (Mini-)HydroFlex as a Reversible Hydrogen Electrode, Normal Hydrogen Electrode, and Standard Hydrogen Electrode.
How to Work with the Hydrogen Reference Electrode HydroFlex
Here you will find information on commissioning, maintenance and troubleshooting of the hydrogen reference electrode HydroFlex.
How to Work with the Hydrogen Reference Electrode Mini-HydroFlex
Here you will find information on commissioning, maintenance and troubleshooting of the hydrogen reference electrode Mini-HydroFlex.
Checking the Functionality of the HydroFlex and Mini-HydroFlex
Ideally, you should check the hydrogen electrode against a so-called master electrode, e.g. a calomel electrode, before your actual measurements. Here you will find more information about checking your HydroFlex or Mini-HydroFlex.
Are you convinced to purchase one of our reference electrodes?
Hydrogen Reference Electrode HydroFlex Starterkit
Ideal starter kit for anyone who has not yet worked with the HydroFlex reference electrode.
Hydrogen Reference Electrode HydroFlex
Our Standard Hydrogen Reference Electrode HydroFlex can be used in almost any electrolyte. It is ideal for corrosion measurements. Long-term measurements of up to 6 months are also possible without user intervention.
Mini Hydrogen Reference Electrode Mini-HydroFlex
Gaskatel has further developed and reduced the size of the hydrogen reference electrode for use in confined spaces. The structure and functionality correspond to the hydrogen electrode HydroFlex – just smaller. Ideal for use in FlexCell and ElyFlow.