It is worth noting that ordinary-grade silica gel is generally used in some industrial products, while food-grade silica gel is generally used in products that come into contact with our diet.
Food-grade silica gel is non-toxic, odorless, insoluble in water and any solvent, and is a highly active green product. Therefore, in the daily purchase of silica gel products, you must learn to distinguish between ordinary grade silica gel and food grade silica gel.