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.
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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