Desiccant works by efficiently absorbing airborne moisture left inside the bag after vacuum sealing, and captures moisture that manages to pass through the bag material. See page 2 of the data sheet for desiccant loading formula.
Secure in a strong envelope of either cleanroom compatible, sulphur-free non-woven Plastic or economical Kraft paper, these desiccants are designed to keep your devices dry. Meets the requirements of IPC/JEDEC J-STD-033 and MIL-D-3464, Types I & II. Click on Documents tab for additional sales and technical literature.