Control Company Humidity Sponge, Regenerable

• Meets FDA requirements
• Bags are certified as Class M3.5 cleanroom compatible
• Compact size, regenerable bags

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. Outer material is made of DuPonts Tyvek† breathable, high-density polyethylene. Zero-Dust bags are certified as Class M3.5 (formerly Class 100) cleanroom compatible.

Drying capability depends on volume, temperature, and moisture. As a benchmark, one bag will maintain dry conditions in a container with a volume of two gallons (476 cubic inches/7800 cubic centimeters). Bags are guaranteed to retain 16% moisture by weight; typical results are 37% moisture absorption. Each bag measures 3 x 3 x ¹/₄ inches and weight is ³/₈ ounce.

Indicator Humidity Sponges™
Indicator Sponge has one side of clear film and one of white Tyvek†. It contains blues particles which turn pink when the desiccant has reached its moisture capacity and needs to be replaced. Indicator Humidity Sponge™ cannot be regenerated.

Regenerable Humidity Sponges™
Regenerable Sponge has white Tyvek† on both sides and may be regenerated and reused continuously. Regeneration requires heating in an oven at 220°F (104°C). Included in each pack is a Relative Humidity Card which changes from blue to pink to show when bags need to be regenerated.

†Tyvek is a DuPont registered trademark
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