> Let's see... 'hot enough to boil water but not hot enough to set the bag > on fire', wouldn't that be about 400 degrees F? And while 16 hours is > surely sufficient, and may be required for really large quantities of > dessicant, the original poster was talking about 200 gram bags. I can't > imagine that it takes 16 hours to cook the moisture out of a mere 3 ounces > of dessicant. I have a small bag, less than 10g. The instructions on the bag say "Reactivation time in bag 12 hours at 245°F. Those in the US could call the manufacturer, Engelhard (I think - the print is blurred), at 1-800-854-4039 for details. Stay dry, Tim