Sodium hypochlorite generator cells and salt chlorinator cells both use electrochemical technology to generate chlorine from salt-containing water. However, they are designed for different operating conditions, chlorine production requirements, and system configurations. For equipment manufacturers, water treatment companies, pool equipment suppliers, and engineering contractors, selecting the right electrolytic cell requires more than comparing chlorine output.
Key factors include salt concentration, current density, electrode area, flow rate, cell structure, titanium substrate, MMO coating, connection dimensions, and operating conditions. NAVI Titanium provides custom titanium electrolytic cells and MMO-coated titanium electrodes for sodium hypochlorite generators, salt chlorinators, and other chlorine-generation systems.
Sodium Hypochlorite Generator Cell vs. Salt Chlorinator Cell
The primary difference lies in how the electrolytic cell is integrated into the overall system.
- A sodium hypochlorite generator cell is generally designed to electrolyze a prepared brine solution and generate sodium hypochlorite for subsequent storage, dosing, or disinfection.
- A salt chlorinator cell is normally installed directly into a swimming pool circulation system. It electrolyzes salt-containing pool water and generates available chlorine directly in the circulating water.
| Item | Sodium Hypochlorite Generator Cell | Salt Chlorinator Cell |
| Main application | Water and wastewater disinfection | Swimming pool water treatment |
| Feed solution | Prepared brine | Prepared brine |
| Chlorine use | Sodium hypochlorite production and dosing | Sodium hypochlorite production and dosing |
| Typical output specification | g/h or kg/day | g/h or kg/day |
| Salt concentration | System-dependent | Typically low-concentration salt water |
| Polarity reversal | Application-dependent | Commonly used |
A sodium hypochlorite generator uses an electrolytic cell as the core chlorine-generation component. Salt water or prepared brine passes through the cell, where an electrochemical reaction generates chlorine-containing products that form sodium hypochlorite under the designed operating conditions.
The cell is commonly integrated into a complete system consisting of:
Salt Preparation → Brine Supply → Electrolytic Cell → Sodium Hypochlorite Solution → Storage / Dosing
This configuration is suitable for applications where the customer needs to produce disinfectant on site rather than purchase and transport commercial sodium hypochlorite.
Salt Chlorinator Electrolytic Cell
A salt chlorinator cell is primarily designed for swimming pool and recreational water treatment. Instead of preparing a separate concentrated brine stream, the system uses salt already dissolved in the pool water.
The basic process is:
Salt Pool Water → Electrolytic Cell → Chlorine Generation → Pool Disinfection
The cell is normally installed in the pool's circulation pipeline. When the circulation pump operates, salt-containing water passes through the electrode chamber and chlorine is generated electrochemically.
Salt chlorinator cells therefore need to meet different requirements from industrial sodium hypochlorite generator cells.
Key Technical Parameters for Electrolytic Cell Selection
Chlorine Production
Chlorine production is typically specified in g/h or kg/day. The required output provides the basis for determining the electrode area, operating current, and overall cell configuration.
Operating Current & Voltage
Current and voltage must be matched with the electrolytic cell and power supply. The actual operating range is influenced by electrode area, current density, electrolyte conductivity, and cell configuration.
Salt Concentration
Salt concentration affects electrolyte conductivity and electrochemical performance. Sodium hypochlorite generators generally use a controlled brine solution, while salt chlorinators operate with salt-containing pool water.
Flow Rate
Flow rate should be matched to the cell design and application. It affects electrolyte circulation, reaction conditions, heat removal, and the effective operation of the electrode assembly.
Electrode Area
The active electrode area is closely related to current density and chlorine production. For customized cells, electrode dimensions should be determined according to the required current, target output, and operating conditions.
Electrode Spacing
Electrode spacing affects electrical resistance, voltage requirements, fluid circulation, and the overall cell structure. The spacing should be designed according to the electrolyte characteristics, electrode configuration, and available installation space.
Titanium Electrodes for Chlorine Generation
Titanium is widely used as the substrate material for chlorine-generation electrodes because of its corrosion resistance and suitability for electrochemical applications.
For sodium hypochlorite generator cells and salt chlorinator cells, the titanium substrate can be combined with an MMO catalytic coating to provide the required electrochemical surface.
Depending on the application, electrode configurations can include:
- Titanium plates
- Titanium mesh
- Titanium tubes
- Titanium rods
- Multi-plate electrode assemblies
- Customized titanium electrode structures
The coating system can also be selected according to the operating environment and target reaction. NAVI Titanium supplies MMO-coated titanium electrodes based on customer requirements, including Ru-Ir oxide and IrO₂-based coating systems.
Product Specifications for B2B Procurement
When requesting a quotation for an electrolytic cell, providing complete technical information allows the manufacturer to evaluate the cell more accurately.
| Specifications | Information Required |
| Chlorine output | Chlorine output |
| Chlorine output | ppm or g/L |
| Working current | A |
| Working voltage | V |
| Water/brine flow | L/min or m³/h |
| Electrode dimensions | L × W × T |
| Inlet/outlet | Pipe size and connection type |
| Polarity reversal | Required interval |
Providing these parameters helps avoid selecting a cell based only on chlorine output, which may result in a mismatch between the electrode assembly and the customer's actual system. For the standard parameters, please refer to Titanium Anode.
Sodium Hypochlorite Generator Cell or Salt Chlorinator Cell?
The selection should be based on the complete application rather than the product name alone.
Choose a sodium hypochlorite generator cell when the system is designed to:
- Produce sodium hypochlorite on site
- Use a prepared brine solution
- Supply disinfectant to a dosing system
- Treat municipal or industrial water
- Support larger-scale disinfection processes
Choose a salt chlorinator cell when the system is designed to:
- Treat swimming pool water
- Generate chlorine directly in the circulation line
- Operate with low-concentration salt water
- Integrate into compact pool equipment
- Support automatic polarity reversal and inline operation
For OEM projects, the distinction is especially important because the cell must be matched to the power supply, water chemistry, hydraulic conditions, electrode configuration and installation space.
