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Quotation

ISO 22241-1:2019

ISO 22241-1:2019 provides quality specifications for AUS 32 (Diesel Exhaust Fluid or DEF/AdBlue) used in Selective Catalytic Reduction (SCR) systems in diesel engines.

How Manufacturers Use It:

  1. Product Formulation & Quality Control
    • Ensures that DEF (AUS 32) is manufactured with 32.5% high-purity urea and 67.5% deionized water, maintaining extremely low impurity levels.
  2. Production Process Standardization
    • Guides manufacturers in designing controlled production environments to prevent contamination (e.g., heavy metals, oils, or ions).
  3. Testing and Certification
    • Sets mandatory chemical and physical properties (e.g., pH, refractive index, biuret content) for lab testing and quality checks.
  4. Regulatory and OEM Compliance
    • Helps DEF manufacturers meet the requirements of vehicle OEMs, and supports compliance with global emission regulations (Euro VI, EPA Tier 4).
  5. Benchmark for Product Consistency
    • Acts as a universal quality reference for batch-to-batch consistency and global export.

Benefits of ISO 22241-1:2019 for Manufacturers

Market Access

Compliance is required for supplying to OEMs, fuel stations, and export markets.

Product Quality Assurance

Ensures consistent DEF purity and performance, minimizing SCR system failures.

Global Standardization

ISO standard recognized worldwide; simplifies trade and logistics.

SCR System Compatibility

Prevents damage to vehicle exhaust systems and sensors by avoiding contaminants.

Process Optimization

Provides clear chemical targets, improving manufacturing efficiency and traceability.

Reduced Liability & Warranty Claims

Properly formulated DEF reduces risk of SCR failure and costly repairs.

Improved Customer Trust

OEMs and fleet operators prefer certified, compliant DEF suppliers.

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