A simple, dependable and economical solution for preventing moisture damage in small, sealed packages. Packets are strong, durable and allow for extremely high adsorption rates. Silica gel filling is made from amorphous silicate which has a high capacity for moisture at temperatures below 75 F and humidity levels above 40%. Meets FDA specifications for direct contact with food and drugs. Protects 47 Cubic Inches. 5,000 Per 5 Gallon Pail.