Protecting your Pyrex: Understanding the Impact of Hot Water Spills vs. Cold Drops

Pyrex, a brand of glass cookware, is a staple in many kitchens around the world. Known for its durability and versatility, Pyrex is often used for baking, cooking, and storing food. However, despite its robustness, Pyrex is not immune to damage. One common concern among users is the risk of cracking or shattering when exposed to sudden temperature changes, such as when hot water is spilled on it or when it is dropped onto a cold surface. This article aims to shed light on these concerns and provide tips on how to protect your Pyrex.

Understanding the Science Behind Pyrex

Pyrex is made from borosilicate glass, a type of glass that contains boron trioxide which allows for a very low coefficient of thermal expansion. This means it won’t crack under extreme temperature changes, which is known as “thermal shock”. However, in the 1990s, the composition of Pyrex sold in the United States was changed to soda-lime glass, which is more prone to thermal shock.

Hot Water Spills vs. Cold Drops

When hot water is spilled on a Pyrex dish, the sudden change in temperature can cause the dish to crack or shatter. This is because the glass expands when it’s heated and contracts when it’s cooled. If this happens too quickly, the stress can cause the glass to break.

Similarly, if a hot Pyrex dish is dropped onto a cold surface, the rapid cooling can also cause the dish to crack or shatter. The risk is even greater if the surface is also a good conductor of heat, such as metal.

How to Protect Your Pyrex

Here are some tips to prevent your Pyrex from cracking or shattering:

• Avoid sudden temperature changes. Do not pour hot liquid into a cold Pyrex dish, or place a hot dish onto a cold surface.
• Do not use Pyrex on the stovetop or under the broiler. Pyrex is designed for oven use, but it is not meant to withstand the direct heat of a burner or broiler.
• Always preheat your oven before placing the Pyrex dish inside. A cold dish in a hot oven can also lead to thermal shock.
• Use oven mitts or trivets to handle hot Pyrex. This not only protects your hands, but also prevents the dish from coming into contact with a cold surface.

In conclusion, while Pyrex is a durable and versatile type of cookware, it is not immune to thermal shock. By understanding the science behind Pyrex and following the tips provided, you can protect your Pyrex and ensure its longevity.