The advantage of vacuum oven is that lower drying temperatures are used which decrease the deterioration of the dry matter. 真空烘箱法的优点为采用较低的烘干温度,从而减少干物质的变质。
For the restriction of water vapor balance in the oven, the testing results by the vacuum oven method are less than the true value of the free water content in the fertilizer. 采用真空烘箱法测定肥料中游离水分时,受箱体内水汽平衡的制约,测试结果易低于真实值。
Note : This section is vertical vacuum oven, the top is a studio, the bottom is a vacuum pump kit. 备注:本款为立式真空干燥箱,上方是工作室,下方是真空泵工具箱。
The water in fertilizer by vacuum oven method 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。
Compared with the vacuum oven drying and the microwave vacuum drying methods, the vacuum belt drying technology can continuous production and the drying product of this technology has high quality with lower water content, higher active ingredient retention rate and shorter drying time. 2. 与真空烘箱干燥和微波真空干燥相比,真空带式干燥具有干燥产品含水率低、有效成分保留率高、干燥时间短和可连续生产等优点。