100cc Oxygen Absorbers more rapidly capture oxygen at room temperature. Under normal room conditions (20°C), packages will be oxygen-free within 24 hours. At a temperature of 6°C, packages will be oxygen-free within 48 hours. In 0°C to 4°C conditions, packages will be oxygen-free within 72 hours. Given the content moisture levels can differ widely, we suggest customers test for their own unique circumstances.