High Potential anodes are recommended for projects where soil resistivity is more than 2,000 ohm-cm, and less than 10,000 ohm-cm. If soil resistivity is above 10,000 ohm-cm, we recommend an impressed current system.
The real benefit of high potential anodes comes from their voltage which is higher driving than standard magnesium anodes which makes them a high-quality, cost-effective option. The backfill mixture used lowers the anode to earth resistance and draws moisture to the anode for better performance and uniform consumption.
Manufactured to meet or exceed industry standards, our zinc pencil and condenser anodes are ideal for heat transfer equipment, as well as coated steel structures with limited space. Zinc anodes can be used as a permanent reference under tanks & vessels as they are effective for prolonging a structure’s life and its coating in marine environments up to 120°F.
Due to zinc’s higher density (446lb/ft3), zinc anodes are smaller with a higher resistance to electrolytes than magnesium or aluminum anodes of the same weight. Zinc also boasts a high conversion efficiency of 90% compared to 50% for magnesium making it a cost-efficient solution. Produced to resist corrosion build-up, these zinc anodes continue to produce protective currents until they are fully depleted, meaning fewer replacements and reduction of overall costs.
H-1 Magnesium anodes are recommended for projects where soil resistivity is less than 2,000 ohm-cm. Considered the Standard Potential Magnesium, the H-1 alloy anodes are cast to meet ASTM AZ63 and tested to meet the requirements of ASTM G97 procedures.
A cost-effective option, the lower current output of H-1 magnesium anodes allows them to operate longer than high potential anodes in less resistive, more conductive environments. These are particularly ideal for environments where overprotection may be a concern. The backfill mixture lowers the anode to earth resistance and draws moisture to the anode for better performance and uniform consumption.