Sodium hypochlorite electrolyzer

Selecting a high-performance electrolyzer requires focusing on the electrode coating technology. Ensure the supplier uses Grade 1 Titanium as the substrate with a Ruthenium-Iridium (Ru-Ir) oxide coating. This combination ensures high electrolysis efficiency and a long service life, typically exceeding 3-5 years under standard operating conditions. Additionally, verify the current density and salt consumption rates; a high-quality unit should maintain low energy consumption while maximizing available chlorine concentration.

Buyers must prioritize units that comply with ISO 9001 for manufacturing quality and CE certification for electrical safety. Key technical benchmarks include a salt consumption of <3.5 kg/kg Cl2 and power consumption of <4.5 kWh/kg Cl2. For water treatment applications, ensure the materials used in the electrolytic cell are corrosion-resistant (UPVC or Clear Acrylic) and that the system includes automatic acid washing (CIP) functionality to prevent scaling on the plates.

Sodium Hypochlorite Electrolyzers are versatile, used in municipal water disinfection, swimming pool sterilization, and industrial cooling water treatment. For small-scale onsite generation (e.g., hospitals), a capacity of 50-200 g/h is sufficient. For large-scale water plants, look for modular systems capable of 2kg/h to 20kg/h or more. Always match the output concentration (usually 6000-8000 ppm) to your specific disinfection needs to avoid excessive chemical handling.

The electrolytic cell is the core component. Inquire about the transparency of the cell shell, which allows for visual inspection of electrode status and scaling. A reliable supplier should provide a warranty of at least 12-24 months on the electrode stack. Maintenance-wise, systems with polarity reversal technology or integrated ultrasonic cleaning are preferred as they significantly reduce the frequency of manual descaling and downtime.

The main risks include damage to fragile components (like acrylic shells) during transit and technical incompatibility with local power grids. To mitigate this, insist on seaworthy plywood packaging and specify your local voltage and frequency (e.g., 110V/60Hz vs 220V/50Hz) in the contract. Furthermore, use Made-in-China.com's Secured Trading services to ensure funds are only released after the bill of lading is verified.

Focus negotiations on the cost of consumables and spare parts rather than just the initial machine price. Request a spare parts kit (O-rings, sensors, and fuses) to be included in the first shipment. For bulk orders, aim for a 10-15% discount or ask the supplier to provide free electrode recoating services for the first maintenance cycle. Always request a Factory Acceptance Test (FAT) video before final payment.

Since these units are often heavy and contain sensitive electronics, FOB or CIF terms are common. Ensure the supplier provides a detailed HS Code (typically 854330) to accurately calculate import duties. If the unit includes a brine tank or chemical storage, confirm they are shipped empty to avoid 'hazardous goods' classifications, which can significantly increase freight costs and customs scrutiny.