Storage Hazards

From: Ed Kelleher <>
Date: Fri Oct 8 17:40:27 2004

At 06:08 PM 10/8/2004, you wrote:
>Shake of excess water and rinse again. Dry quickly
>in a warm place. I often set them in the sun but for winter
>drying, an oven set to about 140-150F works well. Use
>a cookie pan or piece of foil to block direct heat radiation
>from the heating elements ( not a problem in convection
>ovens. Also don't even think of using a microwave! ).

Pretty easy for an oven to get too hot.
Polystyrene caps aren't much good when heated past 185F/85C.

After washing circuit boards I make
(last stage is DI water from a filter setup)
I shake 'em off as you say but then
use a cardboard box (the type copier paper comes in)
with a hole in the top for a hair blow dryer.
Another hole in the side at the other side lets the air out.
A thermometer in the box shows it never gets over 150F/65C

Cleaning technique has worked on circuits where leakage had to be on the
order of a few tens of picoamps.
1mv across 1000 MEGohm = 1pa.

Ed K.
Received on Fri Oct 08 2004 - 17:40:27 BST

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