Can glass cups be frozen in the refrigerator?

There is absolutely no problem in putting the glass in the refrigerator, but if you put it in the freezer, you need to be careful because the temperature in the freezer is relatively low. Due to thermal expansion and contraction, if it is not placed properly, it may cause the glass to break. Of course, this also depends on what is in the glass. If it is filled with some sauces or pickles, there is generally no problem, but if it is filled with water, it will break.

Can glass be frozen in the refrigerator?

Refrigerating is fine. The refrigerator will not freeze and the moisture in the food will not change its form. What you can’t put in the freezer is anything, especially if it’s liquid in a bottle. When a liquid changes from a liquid to ice, its volume will increase. If it is placed in a sealed glass bottle, there is a high chance that the bottle will break. This is why glass bottles containing liquids should not be placed in the freezer.

How to choose a glass

??Logo and trademark, appearance quality, rated capacity, sealing performance, odor inspection, hot water resistance, matching performance, and resistance to sudden temperature changes.

1. Logo and trademark: Is it a well-known manufacturer, or does the company have a special trademark, and does it support barcodes (one of the criteria for entering a shopping mall).

??2. The appearance should look smooth, transparent, beautiful, and free of cracks, scratches and dirt; the cup body should be smooth and free of burrs that may damage the skin; there should be no bubbles or stains inside the cup body; the oil prints and handwriting on the cup body should be clear and beautiful.

??3. Standard capacity is 300ml, other capacities are 260ml and 360ml, with tolerance of ±5%.

??4. Sealing performance, that is, whether it is leak-proof: After the cup lid is tightened, shake the drinking cup vigorously. No matter what state the cup is in, there is no leakage of liquid in the cup.

??5. Pour hot water into the cup lid and the cup and smell it to see if there is any peculiar smell.

??6. The sealing ring and silicone sealing ring parts that come into contact with drinking water will not become sticky after being immersed in boiling water, and there should be no significant changes in appearance.

??7. The cup lid and the cup body fit together: The cup lid and the cup body should rotate freely, open and close flexibly, and there should be no slipping.

??8. Resistance to sudden temperature changes: When pouring boiling water, there should be no leakage, cracks, damage or other defects that affect use.

??9. Filter: The size is suitable for the cup body, it will not slide down, the thickness meets the standard and is not easy to bend.

10. Packaging: Beautiful appearance, paper box is the cheapest, slightly better are handbags, gift boxes, hand-held gift boxes, the best is mahogany box plus handbag.