The choice of desiccant should pay attention to. Desiccant is also called absorbent. It is used to prevent moisture and mildew. Desiccant is a kind of dehydrating agent that absorbs moisture from the atmosphere. Its drying principle is to physically adsorb water molecules in its structure or to chemically absorb water molecules and change its chemical structure to become another type. substance. ) Use in small environments: Desiccants are placed directly in bottles, cans or other closed pouches to keep items in the small environment dry. Use in medium environment: The desiccant is used directly in the packaged carton (or packing barrel, bag) to prevent the items in the package from getting wet. Use in large environment: desiccant is directly used in similar warehouses and containers to achieve the purpose of controlling the humidity in the large environment. So what should be paid attention to during the selection and use of desiccant?
1. Pay attention that the dried substance and the desiccant cannot react. Simply put, acidic desiccants cannot be used for alkaline substances, and alkaline desiccants cannot be used for acidic substances.
2. Pay attention to the safety of desiccants. Generally speaking, desiccants must not contain harmful substances, especially desiccants for food and medicine.
3. Pay attention to the adsorption capacity of the desiccant. If it is ineffective or the adsorption capacity is poor, it will definitely affect the purpose of use.
In use
1. Make sure to use the desiccant in a relatively sealed environment, so as to better achieve the purpose of drying and moisture-proof.
2. Make sure that the amount of desiccant is sufficient.
3. Make sure that the outer wrapping paper of the desiccant is not damaged and is not easily damaged.