Mixed Metal Oxide Anodes

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TELPRO ROD ANODES consist of solid titanium rod manufactured using titanium which meets ASTM B348 Grade 1 or 2 standards. The titanium rod is coated with TELPRO Mixed Metal Oxide Coating. 

TELPRO Rod Anodes are available in diameters of 1/8”(3.175mm), 1/4”(6.35mm), 1/2”(12.7mm) and 3/4”(19mm). Other sized available upon request.

TELPRO Rod Anodes are suitable for operation in soils, carbonaceous backfill, freshwater, brackish water and seawater.


TELPRO Mixed Metal Oxide Coating has been designed for use in all cathodic protection applications.TELPRO coating consists of IrO2/Ta2O5 and is suitable for use in soils, carbonaceous backfill, fresh and brackish water, seawater and concrete. Mixed metal oxide coating is generally accepted by the cathodic protection industry to be satisfactory for both chlorine and oxygen evolving electrolytes.

Based on accelerated life testing conducted by an independent laboratory, TELPRO MMO coating has proven to be superior to other mixed metal oxide coatings currently being used. A copy of this test report is available upon request.

Strict quality control procedures are followed throughout the coating process to insure proper coating adhesion and loading. Production of a quality product is fundamental in every step of the manufacturing process.

The operating characteristics for TELPRO MMO coating loadings are shown below:

Environment Maximum Current Density Lifetime
Carbonaceous Backfill 4.6 A/ft2 (50A/m2) 20 years
Calcined Petroleum 9.3 A/ft2 (100A/m2) 20 years
Backfill 9.3 A/ft2 (100A/m2) 20 years
Fresh Water 9.3-27.8 A/ft2 (100-300A/m2) 20 years
Brackish Water 55.8 A/ft2 (600A/m2) 20 years
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