Bulk Ocean Blue Diesel Exhaust Fluid (DEF) from Ocean State Oil
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Ocean Blue DEF Meets ISO Standards

The production, handling, and transportation of Ocean Blue Diesel Exhaust Fluid (DEF) are governed by the ISO 22241 standard. The standard covers five main points:

  1. Urea Concentrations: DEF must have a urea concentration of 32.5% by weight. This concentration was selected because it has the lowest freezing temperature, 12°F (-11°C). Ocean Blue DEF is consistently monitored and tested to meet the standard.

  2. Contamination: Contaminated fluid can damage SCR injectors and catalysts, resulting in system malfunction or failure. Therefore, the maximum level of impurities permitted in DEF, such as calcium and various metals such as iron, copper, zinc, and aluminum, are clearly specified. The limits are set very low. For example, a spoon of table salt in a DEF tote would push the sodium content far above the ISO 22241 limit of 0.5 ppm. The production of Ocean Blue DEF is done under the strictest conditions and all levels of impurities are tested and monitored in every batch manufactured, Ocean Blue consistently tests out below the levels of impurities specified in ISO 22241.

  3. Quality: ISO 22241 excludes the use of urea granules used as fertilizer in agriculture, and requires water purified by distillation or deionization. Ocean Blue DEF uses only Urea in solid or liquid concentrate form that meets the standards for ISO 22241. Our deionization process for the water used in the manufacturing process exceeds the standard for ISO 22241 and is considered on par with water used in medical-grade applications.

  4. Materials: Only certain materials are permitted for the storage and handling of DEF. DEF is corrosive to many materials including carbon steel, copper, and aluminum; which cannot be used. The main risk of using incorrect materials with DEF is that the DEF will be contaminated by the material, resulting in damage or failure of the trucks' SCR system on your truck. Ocean Blue DEF is manufactured, stored, and sold in only approved containers that meet ISO 22241. We deliver our bulk in state of the art stainless steel tank trucks specifically manufactured for the transportation and delivery of DEF.

  5. Handling guidelines: Guidelines require manufacturers to follow clear procedures for the manufacture and distribution of DEF, ensuring that the product you use meets the requirements of vehicle manufacturers. Ocean Blue is API Certified and produced under the guidelines of ISO 22241. All batches are tested to meet standards and we retain samples for appropriate quality control under ISO 22241. ISO

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