Moisture control is a critical factor in preserving the quality and longevity of various products. Whether it’s electronic devices, foods, pharmaceuticals, or sensitive materials like artwork and optics assemblies, excess moisture can lead to damage and deterioration. That’s where indicating silica gel comes into play, acting as a powerful desiccant.

What is Silica Gel Desiccant?

Silica gel is a desiccant known for its great moisture-adsorbing capabilities. It consists of silicon dioxide and is shaped as small, porous beads. Silica gel is available in different types and sizes, making it a versatile desiccant capable of application across a wide range of industries. Its primary role is to adsorb moisture, preventing it from damaging the surrounding environment or products. As a leading manufacturer, we offer a comprehensive range of silica gel products.

Indicating Silica Gel Desiccant: What Makes It Different?

Unlike regular silica gel (known as bulk, or non-indicating silica gel), indicating silica gel is enhanced with color-changing indicators. These indicators, typically either cobalt chloride or methyl violet, change color as the silica gel saturates with moisture. This visible change serves as an effective moisture detection mechanism, providing a clear visual indication of when the silica gel needs to be replaced or recharged. This makes it easier to buy and use desiccants effectively.

Two Types of Indicating Silica Gel: Orange and Blue

Orange Indicating Silica Gel

Orange indicating silica gel appears orange or yellow in color when dry and transitions to green as the desiccant progressively saturates with moisture (to about 15% by weight). In addition, orange silica gel is a non-toxic, pollution-free desiccant that meets the needs of environmentally conscious companies. This orange silica gel can be used in many applications where visual control of moisture is required, such as in compressed air dryers, breathers, and for protection of non-consumable packaged goods, as well as drying and storing flowers and seeds. Many companies prefer to buy orange silica gel due to its safety profile.

Blue Indicating Silica Gel

Blue indicating silica gel is a bead or granule that has been washed with a concentration of cobalt chloride. The cobalt chloride is a deep-blue color when dry and transitions from blue to pink as the desiccant saturates. Blue silica gel can be used in many of the same applications as orange silica gel; however, due to the addition of the moisture indicator (cobalt chloride), blue silica gel should not be used in direct contact with products intended for consumption, such as food or pharmaceuticals. For those seeking to purchase desiccants, understanding this distinction is vital.

Why Use Orange Indicating Silica Gel?

In 1998, the European Union prohibited Blue Indicating Silica Gel (which contains cobalt chloride, a known human toxin) from being sold within European markets. Alternatively, orange indicating silica gel, which is used in a variety of the same industries and applications, such as transformer breathers and compressed air dryers, conforms to the European Union requirements for moisture indicating desiccants. As a responsible supplier, we advocate for the use of safer alternatives like our orange indicating silica gel. If you need to buy silica gel, consider the safety and regulatory implications.

Applications of Indicating Silica Gel

Indicating silica gel finds its application in various industries. One of its prominent uses is in the protection of electronic devices and equipment, especially when desiccators or tank vent dryers are used. Moisture is a common enemy of electronics, causing corrosion and malfunction. By placing indicating silica gel packets in electronic enclosures or packaging, moisture can be effectively controlled, prolonging the lifespan and performance of devices. We are a trusted manufacturer and supplier for these critical components.

Moreover, indicating silica gel is widely used in the preservation of food and pharmaceuticals. It helps maintain the freshness and quality of consumable goods by preventing moisture-related spoilage. In addition, industries dealing with sensitive materials such as artwork and documents rely on indicating silica gel to create optimal storage conditions, preventing mold, degradation, and other forms of damage. For bulk purchase inquiries, contact our sales team today. Our goal is to be your preferred supplier.

How Much Desiccant Do You Need?

Knowing how much desiccant is enough to protect your products can be challenging. We provide a user-friendly Desiccant Unit Calculator on our website to help you estimate the quantity needed. Simply input your enclosure volume and find out how much desiccant you need. This ensures you buy the right amount for effective moisture control.

For reliable moisture control solutions, consider our range of high-quality silica gel desiccants. Contact us to learn more about our products and to get a competitive quote. We are a premier manufacturer and supplier, ready to meet your needs.