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The Fertilizer Institute (TFI) has updated its Verified Ammonia Carbon Intensity (VACI) certification scheme to include nitric acid, ammonium nitrate, urea, and urea ammonium nitrate. A 90-day comment period is open for feedback from stakeholders. VACI, launched in December 2024, verifies carbon intensity for ammonia used in fertilizers and industrial applications, and now includes a Product Carbon Footprint tool for ammonia-derived products.