The source of moisture and the number of water molecules in effervescent tablet tube

There are several sources of moisture in effervescent tablet tube：
First, the effervescent tablet tube's body and the cap material itself have a certain amount of moisture.
Second, the evaporation of water in the medicine and packaging materials during the production process and storage.
Third, the moisture contained in the medicine itself.
Fourth, the moisture contained in the air in the packaging after the packaging container is sealed.
Fifth, after sealing, the water molecules in the external atmosphere penetrate into the product during transportation and storage.
Physically adsorbing water molecules into their structures, or chemically absorbing water molecules and changing their chemical structure to become another substance.
Influence factors of water molecules number in the effervescent tube:
1.The size of the packaging container (dry space), the humidity requirements of the packaged product (the relative humidity of the predetermined control)
2.the water content of the product itself
3. The properties of the packaging materials used in the product (especially moisture permeability)
4.the level of sealing of the product packaging
5.The temperature and humidity of the environment when the product is packaged, the shelf life of the product, the environment and climatic conditions for product transportation and storage, etc.
6.the absorbency of the desiccant