PA pepper ball is easy to absorb water, and the accuracy and size of the pepper ball will change accordingly after absorbing water. After the PA pepper ball is just injected, the water content is almost zero, and it will gradually absorb water until it is saturated with water, which will affect the accuracy and size.The amount of water absorbed by PA pepper balls has a great relationship with the air temperature. In many cases, the measured size of the finished PA pepper balls is qualified, but after being left for a period of time, the size will become larger, which is beyond the normal tolerance range of the products. As a standard product, PA pepper balls cannot be produced now and then shipped every time, so it is necessary to take corresponding protective measures for the inventory of PA pepper balls. In fact, the method to prevent PA pepper balls from absorbing water is also very simple, that is, the PE bag for packaging PA pepper balls is vacuum packed. After this treatment, PA pepper balls are completely isolated from the air, so they will not absorb water, which will affect the accuracy of pepper.