How to tell if silica gel desiccant is working?

We all know that the #silica_gel_desiccant we often see is transparent beads, and its color will not change much whether it absorbs moisture in the air or not. This makes it difficult for us to distinguish whether the silica gel we buy is effective at all. #Indicating silica gel desiccants can solve this problem. Indicating silica gel #desiccant is generally available in two colors, blue and orange. Blue silica gel changes from blue to red or pink after absorbing moisture and orange silica gel changes from orange to dark green after absorbing moisture. As long as some colored silica gel is added to the transparent silica gel, the changes before and after moisture absorption can be seen. This is very useful, isn't it? #silicagel #absorb_moisture #made_in_china #dingxingdesiccant