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Microwave safe ceramics standards

11/27/2007 2:35 AM

Are there standards to determine if something is microwave safe? (Not safe microwave, which is less likely)

For instance if I make and sell ceramic bowls, can I badge it microwave safe if it heats my meusli without exploding?

Thanks again amigos!

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#1

Re: Microwave safe ceramics standards

11/27/2007 2:57 AM

Good question!

You could probably spend a fortune paying a test house.

My guess is that If you test it (empty) in the most powerful microwave you can find and it doesn't get too warm. You could say it was ok.

This assumes you are producing a consistent product, you should also test a statistically significant sample... (I always think 30 is a damn fine number...but I'm sure that 73% of statisticians would dispute this 25% of the time )

Presumably you have already searched for standards?

To my mind it is about exercising 'due diligence' eg... record all your testing and maybe take regular production samples and do a re-check.

I expect I will get slated by some health and safety guy who will throw his hands up in horror and shake his head. But why should your (cheap) tests be less valid than expensive ones?

Much of EMC and CE testing in the electronics business is done by 'self certification'...hmmm that's another nice phrase to throw into the file.

Good luck

Del

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#2

Re: Microwave safe ceramics standards

11/27/2007 10:00 PM

I am no expert, but along wth ensuring it does not explode, I believe it is also necessary to proove that no (or minimal) chemicals will leach into the food from the container during cooking.

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#3

Re: Microwave safe ceramics standards

11/28/2007 6:22 AM

Test as another posted said with an empty container of yours in a powerful microwave oven, but make sure that you also have another container, filled with water nearby in the oven at the same time as some Microwave ovens do not like it if little or no energy gets used.

If your sample can be easily picked up after 5 minutes (basically cold) then you do not have a problem.

Check all new batches in the same way.

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#4

Re: Microwave safe ceramics standards

11/28/2007 11:34 AM

Try ....here. That should start you out. There is a surprisingly large amount of reference material found by a Google search of 'microwave safe standards'.

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Commentator

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#5

Re: Microwave safe ceramics standards

11/28/2007 9:15 PM

Glazed ceramics will also deteriorate in domestic use and eventually heat up seriously in microwave ovens due to penetration of moisture and dishwasher chemical through sagger marks and other holes in the glaze.The glaze often crazes and the effect cumulates.

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#6
In reply to #5

Re: Microwave safe ceramics standards

11/29/2007 4:15 AM

Hey nice point..

Need to add in an accelerated life test, and a disclaimer...

'this product will self destruct in 15 years'

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#7

Re: Microwave safe ceramics standards

11/29/2007 5:35 PM

Just give a free pair of ovenproof gloves with each purchase.sorry I almost said 'asbestos' ,that would present another approvals problem.

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