Photo of Desiccant in a Cartridge
Convenient, easy to handle cartridges fit into the bottom section of standard glass or plastic desiccators. Cartridge consists of durable, longwearing polyester felt bag with a perforated Mylar® cover sealed in place. It is filled with Natrasorb® TI indicating silica gel beads which change color from blue when dry to pink when moist. Saturated gel can be regenerated in a 150° C (300° F) vented oven for 3 hours or more (depending on size), until blue color returns and may be regenerated repeatedly without degradation. Cartridges come individually sealed in a moisture-proof pouch ready for use.
Photo of Indicating Drierite
Indicating DRIERITE is impregnated with cobalt chloride. Indicating DRIERITE is blue when dry and changes to pink upon absorption of moisture. The color change is pronounced and clearly visible. This makes Indicating DRIERITE valuable when it is necessary to know with certainty that dryness is being maintained and to signal when the drying agent should be replaced. It has the same efficiency as Regular DRIERITE, and somewhat greater capacity due to the desiccating effect of the cobalt chloride. Contents: 97% CaS04, 3% CoCl2.
Photo of Non-Indicating Drierite
Non-Indicating Drierite is anhydrous calcium sulfate. It is of neutral pH, constant in volume, chemically inert except toward water, insoluble in organic liquids and refrigerants, non-disintegrating, non-wetting, non-toxic, non-corrosive, non-channeling, generally recognized as safe (GRAS) by the FDA, not regulated by OSHA, economical to use, and can be regenerated repeatedly for reuse. Typical analysis >99.5% CaS04.
Photo of Balance Desiccator
The DRIERITE Mini-Dehumidifier is designed for the static absorption of moisture in closed containers of up to 6 cubic feet in volume. It meets the demand for a convenient, safe and efficient drying unit for the analytical balance or other small closed compartments, such as reagent storage cabinets, desiccators and safes. Static drying of air and gases to a -100° F dew point. Convenient drying unit for the analytical balance chamber or other small enclosures. The DRIERITE Mini-Dehumidifier may be regenerated by placing it in an oven at 220° C or 425° F for one hour.
Photo of Tel-Tale® Bulk Desiccant
Tel-Tale® Bulk Desiccant 5-Lb Cans. The indicating silica gel is a lustrous royal blue color when it is fresh. As it adsorbs water, the color changes to light blue, then pink, and then almost colorless. This color progression provides a relative indication of the degree of saturation of the silica gel. The product is reusable and will change back to a deep blue color when reactivated at 125° to 160° C. These products are actually bulk, not packaged, desiccants.
Photo of Control Company 3150 Humidity Sponge

Humidity Sponges™ meet all drying requirements. The latest in drying technology turns any container into a desiccator. Indicator bag particles show when moisture capacity has been reached. Humidity Sponges™ meet FDA (Food and Drug Administration) requirements for use in direct contact with food and drugs. Desiccant (sodium calcium aluminosilicate hydrate) is nontoxic and is a GRAS (Generally Recognized as Safe) material. It is ideal for storing food/pharmaceutical samples, electronics, PC boards, optics, chemicals, and equipment.

Photo of Disposable Desiccant Cartridges
For use in desiccator cabinets or non-vacuum desiccators, analytical balance cases and precision laboratory instruments. The clear polystyrene dish allows instant visual inspection of silica gel that changes in color from blue to pale pink as it absorbs moisture. A highly porous membrane covers the dish of desiccant providing excellent moisture absorption.