Catholyte Reservoir
Catholyte Reservoir for MEA Electrolyzers and GDE Flow Cells
A 5-port Electrolyte Tank supporting storage, circulation, ventilation, and in-line monitoring
Specifications | In the Box | Gallery | Related Products | Technical Support
Our 100 ml Catholyte Reservoir is ideal for circulating catholyte through GDE flow cells and MEA electrolyzer systems. It has five ports supporting simultaneous electrolyte circulation, gas venting, and in-line monitoring, making it suitable for CO₂RR and other gas-evolving cathode reactions and allowing real time product gas venting and electrolyte condition monitoring
In extended electrolysis experiments, catholyte composition is susceptible to drifts. These occur for various reasons: as carbonate/bicarbonate species accumulate, pH shifts, and water crosses the membrane from anolyte to catholyte (or vice versa, depending on membrane chemistry). Compared to PEM systems, these effects are especially pronounced with AEM and BPM systems, due to the tendency of salt precipitation.
The five-port layout allows you to track these changes without interrupting your run. It has a dedicated sampling port supporting in-line electrolyte analysis as well as periodic pH and conductivity checks. The separate gas vent prevents cross-contamination of analytical measurements by keeping evolved cathode products (CO, H2, or C2+ hydrocarbons in CO2RR systems) isolated from the liquid sampling line. Our catholyte tank is equally suited to short screening experiments and multi-hour stability tests especially where catholyte condition is a key variable in interpreting Faradaic efficiency and product selectivity data.
One Reservoir-Three Functions
Supports Circulation, Ventilation, and In-line Analysis
Chemical Resistant
Excellent resistance across the full pH range
Effective Sealing
Sealed design minimising catholyte evaporation and gas ingress
Compatibility
Ossila and other MEA Electrolyzers, GDE Flow Cells, and PSE Electrolyzers
Specifications
| Volume | 100 ml |
|---|---|
| Body Material | Borosilicate Glass |
| Lid Material | PTFE |
| Port Material | PEEK |
| Number of Ports | 5 |
| Port (inner) Diameter | 3 mm |
Suggested Port Usage: 1. Catholyte Inlet (return from cell), 2. Catholyte Outlet (to pump/cell), 3. Gas Vent (cathode-evolved gas release, e.g. CO, H₂, hydrocarbons), 4. Sampling Port, 5. Temperature or pH probing
User Manual
Catholyte Reservoir User Manual
In the Box
- Glass Body
- PTFE Screw Caps with PEEK electrode secure screw
- Circular Sampling window septa
- PTFE rod 3 mm air inlet/ outlet stopper
- O-rings
- Spare PEEK electrode secure screw
- PTFE tubing
- Sampling Needle
Catholyte Reservoir Gallery
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