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Surface texture of anodized aluminum

I'm hearing that anodized aluminum is not suitable for machinery components in food (meat) processing plants. That because the anodize is porous it is not cleanable. Can anyone confirm if anodized aluminum is FDA approved? I'm assuming it is since lots of cookware has this treatment. Also would like to know the expected surface texture (Ra) of type III, class 1 anodize.

Peter Cipolla
- Kansas City, Missouri

letters 10881 and 12047 address that question quite well.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Ted is available for instant help
or longer-term assistance.

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