The water in fertilizer by vacuumovenmethod were tested, and sources of uncertainty measurement of water were analysed and evaluated.
利用真空烘箱重量法测定了复混肥料中的水分，并对水分的测量不确定度的来源进行了分析和评定。
2
Determination of free water for compound fertilizers is usually applied Karl Fischer method or vacuumovenmethod, a different extraction solvent can selected as Karl Frscher method is applied.