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The Fertilizer Institute (TFI) has expanded its Verified Ammonia Carbon Intensity (VACI) certification scheme to include nitric acid, ammonium nitrate, urea, and urea ammonium nitrate. This update follows a 90-day comment period for feedback from ammonia producers, fertilizer manufacturers, farmers, and other stakeholders.

The VACI scheme, launched in December 2024, is designed to verify the carbon intensity of ammonia used in fertilizers and industrial processes. A Product Carbon Footprint tool is also now available to track carbon intensity from ammonia production through to fertilizer manufacturing.