Blue and orange Non-Indicating Silica Gel is a type of silica gel that has a lot of internal surface area and is very porous. Chemically inert, it is tasteless, odorless, non-toxic, and non-corrosive. It is a highly activated adsorbent that comes in a variety of mesh sizes and is intended for numerous industrial applications. The silica gel does not undergo any chemical reaction or produce any byproducts during adsorption. Silica gel doesn't change color, and its size and shape never change. Even when it is completely submerged in water, its outer surfaces remain dry and it continues to flow freely.