
Silica Gel Clear View (not for food applications)Silica Gel, Type A, Blue Indicatingis the naturally occurring mineral silicon dioxide that has been purified and processed into a hard, smooth beaded form. The beads are then saturated with a moisture indicating solution that gives them a deep blue color when dry. It is also known as a narrow pore silica gel and has a vast network of interconnecting pores with diameters of 20-30Å. These pores have a strong affinity for moisture and use physical adsorption and capillary condensation to trap and hold it. Silica gel will remove moisture at temperatures as high as 220°F, but is best used at room temperature (70-90°F) and high relative humidity (60-90%Rh). The color changes from blue to purple to pink as it adsorbs moisture.
As a primary desiccant or blended with other desiccants in any application where visual control of moisture is required, such Due to the addition of the moisture indicator, Indicating Silica Gel should not be used in contact with products intended for consumption such as food or pharmaceuticals. |