Humidity Sponge* Desiccant

Meets FDA requirements for use in direct contact with food and drugs. Bags are certified as Class M3.5 cleanroom-compatible.
Indicator bag has one side of clear film and one of white Tyvek* breathable HDPE. Regenerable bags have white Tyvek* on both sides and come with a relative humidity card. Regeneration requires heating in an oven at 104°C (220°F). Measures 76.2 x 82.6 mm (3 x 3.25 in.). Guaranteed to retain 16% moisture by weight, although typical results are 37% moisture absorption.