DEF Urea: Specifications, Grades and Price for AdBlue Production
DEF urea is the high-purity urea used to make diesel exhaust fluid (DEF), sold in Europe as AdBlue. The finished fluid is 32.5% urea dissolved in deionised water, and it must meet ISO 22241. Ordinary fertilizer urea is not pure enough, so DEF producers buy special technical or automotive grades. If you run a DEF
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