What color should desiccant be?
Bulk Desiccant (#19960 & #19961) The moisture color indicator is due to bright blue crystals of a heavy metal salt, cobalt chloride. As the gel begins to absorb water, the color changes to light blue and finally pink, when it has absorbed about 8% of its weight in moisture.
What color does silica gel turn?
Blue silica gel has cobalt chloride, which allows the blue silica gel change its color to pink when it reached its maximized adsorption capacity. Once pink it can be reactivated with heat to dry out the moisture. When it turns blue again, it’s ready to use.
How do you know when silica gel is full?
How Do I know When Silica Gel is Saturated with Moisture? Indicating Silica Gel changes color when it is saturated with moisture. Orange Silica Gel turns dark green or black when drying out is required, and Blue Silica Gel turns pink when it needs to be regenerated.
How many grams of silica gel do I need?
The required size of the desiccant silica packet will very much depend on the chosen application. It is recommended that: 5 grams of silica gel is used per cubic foot of volume and. 170 grams is used per cubic metre of volume.
What is the indicator in silica gel?
Indicating silica gels are joined with a moisture indicator that changes color when the gel goes from anhydrous (dry) to hydrated and saturated (wet). Common indicators used with silica gels are cobalt chloride and methyl violet. Cobalt chloride is the most popular, changing from deep blue to when dry to pink when wet.
How can you tell if silica is non indicating saturated?
It’s known as “indicating gel.” This means that the gel granules will change color when they’re saturated. Usually, they’ll start off orange and then go to green when they’re full. So, there’s no more guessing.
What is the lifespan of silica gel?
The shelf life of silica gel is between 4 and 12 months (although practical experience has shown that it can often far exceed this). The crucial factor is to keep it in a sealed environment until it is needed for use – it will, of course, adsorb moisture from any environment.
What does silica gel and its colour indicators mean?
Indicating silica gel is a silica gel bead or granule that has been washed with a concentration of cobalt chloride ( a heavy metal salt). The cobalt chloride is a deep blue color when it is dry and turns from blue to purple to pink as it becomes saturated with moisture.
What are desiccant sizes available?
There are a number of sizes available when it comes to desiccant bags. The standard sizes are the following: 1/6, 1/3, 1/2, 1, 2, 4, 8, 16 and 80 units. As a guide, one unit is roughly one ounce of desiccant material.
What does desiccant material mean?
What Is Desiccant? A desiccant is a special adsorbent material with a high affinity for water. This special material has hygroscopic properties that allow it to maintain a dry immediate environment by pulling and holding water molecules within itself.