Catholyte Reservoir

Catholyte Reservoir for MEA Electrolyzers and GDE Flow Cells A 5-port Electrolyte Reservoir/Tank supporting storage, circulation, ventilation, and in-line monitoring Specifications | In the Box | Gallery | Pricing | Related Products | Technical Support The Catholyte Reservoir is a 100 mL reservoir designed to circulate catholyte through GDE flow cells and MEA electrolyzer systems. With five ports, it supports simultaneous electrolyte circulation, gas venting, and in-line monitoring, making sure it suited to CO₂RR and other gas-evolving cathode reactions where product gas needs to be safely vented and electrolyte condition monitored in real time. In extended electrolysis experiments, catholyte composition is possible to drifts due to 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). These effects are especially pronounced with AEM and BPM systems, compared to PEM systems, due to tendency of salt precipitation. The five-port layout allows researchers to track these changes without interrupting the run: a dedicated sampling port supports in-line electrolyte analysis along with periodic pH and conductivity checks, while the separate gas vent keeps evolved cathode products (CO, H₂, or C₂+ hydrocarbons in CO₂RR systems) isolated from the liquid sampling line, avoiding cross-contamination of analytical measurements. This makes the reservoir equally suited to short screening experiments and multi-hour stability tests where catholyte condition is a key variable in interpreting Faradaic efficiency and product selectivity data. 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 One Reservoir-Three Functions Supports Circulation, Ventilation, and In-line Analysis Chemical Resistant Excellent resistant across the full pH range Effective Sealing Sealed design minimising catholyte evaporation and gas ingress Compatibility Compatible with Ossila and other MEA Electrolyzers, GDE Flow Cells, and PSE Electrolyzers Specifications Product Name Catholyte Reservoir SKU C2052D1 Volume 100 ml Body Material Borosilicate Glass Lid Material PTFE Port Material PEEK Number of Ports 5 Port (inner) Diameter 3 mm Diagram of 5-port Catholyte Reservoir (100 ml) 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 3mm air inlet/ outlet stopper O-rings Spare PEEK electrode secure screw PTFE tubing Sampling Needle Catholyte Reservoir Gallery Previous Next Related Products [[collection handle="" tags="" limit="5"]] Electrochemical Cells Photoelectrochemical Cells Electrodes