Can Ball jars be used in the microwave oven like Pyrex glass?

Question

I know that they can be safely used at low settings for short times but what about high settings and longer times?

Answer 1

One test you can do is, place the jar in the microwave. Close to it, but not right next to it, place some water in Pyrex glass. Turn it on for 5 minutes.

After 5 minutes, touch the jar for temperature. If it is warm or hot, it absorbed the microwave energy. It is NOT suitable for use in microwave. Under the same circumstances, an EMPTY Pyrex jar will not heat up as it is invisible to the microwave energy.

The reason for placing water in a second jar is because it will act as a "load" to the oven. Without it, your microwave will suffer from having its energy directly reflected back at it. (longer explanation withheld)

Because Ball jars are not made for microwave use, I wouldn't expect one test to be representative of all others. I wouldn't be surprised if you get different result from different size, shape, years made, etc.

Answer 2

Pyrex Jars

Answer 3

Using these jars for canning in hot water is one thing, but in a microwave.....I don't think I would try it. Especially if the jars have been used several times already for canning, as they tend to weaken over time.

Answer 4

I would say do not use in a microwave as I have had glass containers actually melt in a microwave. Use only containers that are declared microwave safe and I don't think Bell jars will work.

Answer 5

particular you may yet do no longer overfill as that is going to in all probability bubble over, and cover. you will could shop an eye fixed on the point of liquid and the cost it chefs. evaluate making use of a pot on low warmth on between the back factors. (that is going to dependon what you're making) Use a Dutch oven or comparable in case you have one.

Answer 6

I wouldn't count on it

Answer 7

yes it should, they are made to handle high temps for canning.
yes you can...