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PLucas1

Melba's Jammin' > wrote in news:barbschaller-
:

> In article
> >,
> ImStillMags > wrote:
>
>> Never put non stick in the dishwasher.....especially commercial
>> dishwashers ......
>
> I do it all the time without detriment to the pab. Have for years.
> Damage by a commercial dishwasher is a non-issue.
>

The general consensus seems to be, if the pan is stainless steel on the
outside, there is no problem, but if it's the anodized type (either
charcoal grey or black on the outside) then you'll have a problem.

"There’s a couple problems with putting your pans in the dishwasher:

1. The non-stick surface can de-laminate from the base metal of the pan.
That’s a problem I wouldn’t want to deal with. Even with the most advanced
coatings and methods of fixing those coatings to the pan, they are --
after all -- non-stick substances and the chemistry of dishwasher
detergent can damage that bond.

2. If your pans happen to be (like most non-sticks these days) hard
anodized (that pretty charcoal grey finish on the outside of the pan
that’s relatively easy to clean) then you risk damaging that finish too.
The dishwasher detergent is the culprit again. The process by which hard
anodizing is performed is an electrolitic dip which actually changes the
molecular structure of the metal (aluminum) into a much harder and more
durable compound. The surface is relatively thin, however, since this
chemical reaction only reaches a "few" molecules deep.

I mentioned dishwasher detergent chemistry, which is a combination of
chemical and physical reactions. The detergent attacks the coatings as if
they were stuck-on food. It’s trying to remove anything that’s "attached"
to the metal of the pan. The reaction between these coatings (which you
want to keep) and stuck-on food is about the same. The coatings will stay
in place longer than stuck-on food (hopefully -- as long as your
dishwasher is working right) but they will eventually succumb to the
ravages of the detergent."

Most non-stick pans only have a life of about 6 months, if you use them a
lot, so you'll need a new one eventually.

--
Peter Lucas
Brisbane
Australia

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