You better check the owners manual for your refrigerator freezer, grab a
thermometer and tweak the thermostat. Every freezer I've used is designed to
run at 0 to 5 degreesF and the refrigerator compartment is between 32 an 38
degF. A temperature of 10 to 20degF in a freezer will give soft ice cream
and premature food spoilage.

Here's a publication from the USDA about temperature for food storage
safety.
http://www.fsis.usda.gov/OA/pubs/aptherm.htm

Paul

> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Gordon Varney
> Sent: Friday, November 08, 2002 9:15 AM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [PIC]: How is the stability of the 16F628's
> internaloscillator ?
>
>
> The real problem with the freezer method, or ice cube is that the ice
> cube is at the same temp as the freezer and that is only 10 to 20
> degrees. Most freezers are not much cooler than that. and a deep
> freezer is only about 5 degrees.  (Also to much water and moisture).
>
> The best method is to go a local office supply store, and buy canned
> air. The type to blow out the key board or just to blow out the inside
> of sensitive electronics as the ads state. Turn it upside down and
> spray the propellant. (-20 to -30 degrees) be care of frost byte. (I'm
> serious) Spray it directly onto the board or just barely pull the
> trigger to drip the liquid onto a single part. (You can also find an
> intermittent connection real fast. ) I have placed a circuit board
> into an insulated freezer bag, then blasted a can of canned air
> (upside down) into the bag closed it for a half hour, opened the bad
> to measure the temp at -10 degrees. The board is good and soaked then.
>
> Gordon Varney
> www.voiceactiveremote.com
> www.talk2it.com
>

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