Our Orange Silica Gel Indicator is not impregnated with cabalt chloride, it is the latest product that can replace the blue silica gel indicator.The composite dyeing agent without pollution to the enviroment has been successfully adopted during the manufacturing process of the orange silica gel indicator. In this way it has prevented the cobalt chloride from pollution the enviroment from the very beginning.
Silica sand is a very inert material, it will not normally attack or corrode other materials and with the exception of strong alkalis and hydrofluoric acid is itself resistant to attack.
Silica sand is non-toxic and non-flammable.
Silica sand is most frequently and conveniently used packed in a breathable sachet or bag. These are available in a wide range of sizes suitable for use with a wide range of applications.