These bags reliably prevent corrosion damage to circuit boards, instruments and devices. One desiccant unit is the quantity of desiccant that can absorb at least 3 g of water vapor at 20% and 6 g at 40% relative humidity in equilibrium with air at 23 °C. PA made of dustproof soda paper for normal applications - according to EN 61340-5-1 MIL-D-3464E - Content:12g - TME:1/3 - PU:1,000 pieces