With the rapid development of industry, environmental pollution has intensified. In order toadministerLiving environment, therefore environmental monitoringWe need toairWater quality and soilclassConduct research and monitoring.This article introduces the laboratory freeze dryer used for soil freeze drying detection and scientific research applications, providing reference for experimental research.
The laboratory freeze dryer utilizes FD vacuum freeze drying technologyTo obtain freeze-dried soil with a moisture content of less than 5%, the soil is subjected to low-temperature pre freezing crystallization to form a solid state, and then sublimated directly into gas under vacuum without the need for liquid removal. The molecular structure, chemical properties, and physical shape of the soil after freeze-drying will not be destroyed, and the data obtained is very accurate, which is conducive to detection and scientific research. The use of laboratory freeze-drying machines has high processing efficiency, which is much higher than drying, sun drying, and air drying, and preserves the original characteristics of the soil.
Laboratory freeze dryerIt can process multiple soil samples simultaneously, which can avoid cross contamination between soils. Provide the following process and method for conducting soil freeze-drying experiments:
1Collect soil samples in non-metallic sealed containers;
2Place different samples separately in different material trays;
3Enter the laboratory vacuum freeze dryer for low-temperature pre freezing;
4After the pre freezing is completed, an automatic drying stage is carried out to remove about 90% of the flowing water;
5The laboratory freeze dryer enters the analytical drying stage after one drying to remove the remaining bound water;
6After freeze-drying, the sample is taken out and sealed for testing and scientific research.
The laboratory freeze dryer has been widely used in environmental testing and scientific research, playing a crucial role in the analysis and testing of environmental samples. At the same time, small laboratory freeze-drying machines are also suitable for biological sample freeze-drying experiments, industrial material freeze-drying experiments, fine chemical sample freeze-drying experiments, rare earth freeze-drying research, etc.