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Determination of moisture in fertilisers and analytical quality assurance in fertiliser production


Determination of moisture in fertilisers and analytical quality assurance in fertiliser production



Proceedings, Fertiliser Society, UK 272: 36



After a short discussion regarding different ways to classify the state of water and the principles of some commonly used methods, a revised method for the determination of "free water" in fertiliser is presented. The revised method is in principle similar to the official AOAC extraction method. Some changes in the analytical procedure are proposed, particularly the change from 1,4-dioxane to isopropanol as an extraction agent. The accuracy of the new method is discussed and evaluated.

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