We are offering Orange Indicating Silica Gel, which is impregnated with safe organic indicator. This Orange Indicating Silica Gel is a safe replacement to blue cobalt impregnated gels. With moisture adsorption, Orange Indicating Silica Gel turns from Orange-Yellow to green. Orange Indicating Silica Gel become saturated over time and can be regenerated to their original dry state and color by heating to between 100 to 120C. Orange Indicating Silica Gel, which we offer, is free of foreign impurities such as Chlorides, Sulphates and other organic matter and has high adsorption efficiency.