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silica gel white:It is mainly used as desiccants, moisture absorbents and rust inhibitors, and can protect instruments, weaponry, electronic equipment, medicine, foodstuff, textile products and other packed material from moisture. It can also be used as a carrier of catalysis and the dehydrating refinement of organic products. Because of its high packing density and effective moisture absorption under low humidity, it is used for the purification of air, drying of garments and nappies, and in cooling systems for energy saving. The desiccant can remove moisture from the air to control the humidity. silica gel blue:When free from moisture the beads are blue. As the beads can take up moisture, they turns light blue gradually. When they turn pink, it indicates that the gel need to be replaced or regenerated. For best result, the product can be used with narrow pore silica gel. In fact, it is mainly used as indicator for the extent of dehumidification and moisture absorption in sealed vessel.My email is www(dot)nele2006(at)163(dot)comOur website is www(dot)wisdom-chem(dot)com silica gel white, silica gel blue, silica gel