SBK SOUW-32 is a high-purity Diesel Exhaust Fluid (DEF) formulated with 32.5% automotive-grade urea and demineralized water for use in SCR (Selective Catalytic Reduction) systems of modern diesel engines. It is designed to reduce harmful NOx emissions, improve exhaust after-treatment efficiency, and support compliance with Euro IV, Euro V, and Euro VI emission standards.

SBK SOUW-32
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DIESEL EXHAUST FLUID
SBK SOUW-32 is a high-purity Diesel Exhaust Fluid (DEF) formulated with 32.5% automotive-grade urea and demineralized water for use in SCR (Selective Catalytic Reduction) systems of modern diesel engines. It is designed to reduce harmful NOx emissions, improve exhaust after-treatment efficiency, and support compliance with Euro IV, Euro V, and Euro VI emission standards in commercial vehicles, passenger cars, buses, construction equipment, and agricultural machinery.
| TEST PARAMETER | MINIMUM | MAXIMUM |
|---|---|---|
| Appearance | Clear and bright | Clear and bright |
| Urea Content % (m/m) | 31.8 | 33.2 |
| Density at 20°C (kg/m³) | 1087.0 | 1093.0 |
| Refractive Index at 20°C | 1.3814 | 1.3843 |
| Alkalinity as NH3 % (m/m) | - | 0.2 |
| Biuret % (m/m) | - | 0.3 |
| Aldehydes mg/kg | - | 6 |
| Insoluble matter, mg/kg | - | 20 |
| Phosphate (PO4), mg/kg | - | 0.5 |
| Calcium, mg/kg | - | 0.5 |
| Iron, mg/kg | - | 0.5 |
| Copper, mg/kg | - | 0.2 |
| Zinc, mg/kg | - | 0.2 |
| Chromium, mg/kg | - | 0.2 |
| Nickel, mg/kg | - | 0.2 |
| Aluminum, mg/kg | - | 0.5 |
| Density @ 15°C (mg/kg approx) | - | 0.5 |
* Note: Typical value; may vary slightly. Please contact your SBK representative for the current batch COA (Certificate Of Analysis)
