... instruments, gauges and equipment.indicates to blue/orange silica gel indicator1. Mainly used for absorbing moisture, ... enviroments2. When being used with ordinary silica gel or drier, it indicates to which ... silica gel drier for the packing of precision instruments,leathers, shoes, clothes, foodstuffs, midicines and household electricappliances, etc. Orange silica gel indicator blue/orange silica gel ...