CEON AGRI · Technical insight
Start with the declaration
A three-number NPK grade is not a complete specification. Check nitrogen forms, whether phosphate and potash are water-soluble, the secondary nutrients and the actual trace-element schedule.
Keep the units visible
Compare like with like. A % w/v liquid declaration describes mass per volume, while % w/w describes mass per mass. Density is needed to move between them. Oxide-to-element conversions retain the same underlying basis.
Ask for the current document
Use the signed product specification and the relevant batch certificate. A historical catalogue, a draft pack or an indicative target cannot establish the current supplied analysis.
Reference: AHDB nutrient-management guidance ↗. Product claims require product-specific evidence.