Can the glass lunch box be heated in the microwave?

Dec 12, 2024

Glass materials suitable for microwave ovens:

  • Generally speaking, many glass tableware can be heated in a microwave oven. Common glass materials suitable for microwave ovens include:

    Microcrystalline glass

    Titanium oxide crystal glass

    Borosilicate glass

  • These glass materials have high stability, high temperature resistance, and are suitable for long-term use in microwave ovens.

  • When purchasing, it is recommended to consult the merchant to confirm whether the purchased glass tableware is suitable for use in a microwave oven.

    Can the glass lunch box be heated in the microwave?

Glass materials not suitable for microwave ovens:

  • Some glasses are not suitable for prolonged heating in a microwave, such as:

        Bottles made of ordinary glass (such as baby bottles)

        Carved glass

        Reinforced glass

        Crystal glass

  • These glasses have poor high temperature resistance and may cause breakage.


Test whether glass tableware is suitable for microwave ovens:

  • Identification check: Check if the glass product indicates that it can be heated in a microwave oven.

  • Water heating test:

        Pour water into a microwave heatable cup, heat for 30 seconds, and observe the temperature of the water and the cup.

        If the cup is hotter than water, it may contain a metal coating or ordinary glass that is not suitable for microwaves.

  • Cup heating experiment:

        Fill a water cup that can be heated in the microwave with water and heat it in the microwave for 1 minute.

        Attention observation: If the water cup becomes very hot, it may not be suitable for heating in a microwave oven.

  • Ordinary heat-resistant glass: Even ordinary heat-resistant glass may break due to prolonged heating time. It is recommended to control the heating time between 30 seconds and 1 minute.


Summary

Before using a glass lunch box to heat food, it is important to confirm whether its material is suitable for microwave heating and conduct necessary tests to ensure safety.

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