"Kennedy" wrote in message
. au...
On 16-Mar-14 11:39 PM, Jim Wilkins wrote:
http://en.wikipedia.org/wiki/Silica_gel
"Once saturated with water, the gel can be regenerated by heating
it
to 120 °C (250 °F) for two hours."

And it can be quite easy to overheat & destroy the silica gel
packet, guess how I know that........

This gives you low-cost, reasonably accurate high temperature
measurement in places where you can't use a stem or dial oven
thermometer:
http://www.amazon.com/TM-902C-Digita...ywords=tm-902c

Mine makes good contact with plugs from Omega. It shows only Celsius.
Personally I like air temperatures in F because I can relate to them,
but do all scientific measurement in metric.
jsw