
Pyrex is a brand of glass cookware that has been manufactured since 1915. It is made using borosilicate glass, which makes it resistant to thermal shock. However, it is important to note that Pyrex should not be subjected to sudden temperature changes or direct heat sources. This means that a rubber Pyrex top should not be placed on a hot pan, as it can cause the glass to shatter or break. To avoid thermal shock, it is recommended to let the pan cool down before placing it on a dry cloth, wooden trivet, or cooling rack.
| Characteristics | Values |
|---|---|
| Pyrex on a stovetop | Not recommended |
| Pyrex under a broiler | Not recommended |
| Pyrex in a toaster oven | Not recommended |
| Pyrex on a barbecue grill | Not recommended |
| Pyrex on an open flame | Not recommended |
| Pyrex on an electric burner | Not recommended |
| Pyrex on a gas burner | Not recommended |
| Pyrex on a hot plate | Not recommended |
| Pyrex in an oven | Safe up to 425°F |
| Pyrex in a microwave | Safe |
| Pyrex in a dishwasher | Safe |
| Pyrex in a refrigerator | Safe |
| Pyrex in a freezer | Safe |
| Pyrex's temperature resistance | -40°C to 300°C |
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What You'll Learn

Pyrex can be used on a stove top if it's designed for that purpose
Pyrex is a staple of home cooking, with generations of cooks using it for their meals. It was invented in 1915 as the first home cookware made with temperature-resistant borosilicate glass. However, it is important to note that not all Pyrex products are designed for stovetops.
Pyrex products that are not designed for stovetops include the "Pyrex" glass line, which is made from borosilicate glass in Europe and soda-lime glass in America. Both types of glass are susceptible to thermal shock, which can cause breakage. Therefore, it is not recommended to use these products on a stovetop, as they can be exposed to potentially damaging direct heat sources.
On the other hand, Pyrex does make ceramic pots that are safe for use on electric or gas stovetops. These pots are designed to withstand the heat of the stovetop without breaking. It is important to always check the product's specifications and instructions before using it on a stovetop to ensure it is safe to do so.
Additionally, it is important to avoid sudden temperature changes when using Pyrex products, regardless of whether they are designed for stovetops or not. This means avoiding placing hot glass on cold or wet surfaces, as well as adding liquid to hot glass, as it can compromise the product's strength and potentially result in breakage.
In summary, while some Pyrex products are designed for use on a stovetop, it is important to follow the manufacturer's instructions and take the necessary precautions to avoid damage or injury.
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Pyrex is susceptible to breakage from thermal shock
Pyrex is a well-known brand of glass cookware, used by generations of home cooks. It was first created in 1915 by Corning Inc. and was the first home cookware to be made with temperature-resistant borosilicate glass. This type of glass was originally used for scientific laboratory equipment and railroad lanterns.
However, Pyrex products are no longer made with borosilicate glass. The brand switched to using tempered soda-lime glass in the 1950s in the US and in 1998 in Europe. This type of glass is more susceptible to thermal shock than borosilicate glass. As a result, modern Pyrex products are at risk of breakage from thermal shock.
Thermal shock occurs when glass is subjected to sudden temperature changes or direct heat sources. Pyrex should never come into direct contact with any type of heating element, including stovetop burners and oven heating elements. It should also not be placed on a cold or wet surface after heating, as this can cause the glass to crack or shatter.
To avoid breakage from thermal shock, it is important to follow the safety instructions provided by Pyrex. This includes avoiding placing Pyrex on a stovetop, broiler, toaster oven, or barbecue grill, and always preheating the oven before placing a Pyrex dish inside. It is also important to avoid adding liquid to hot glass, as this can compromise the product's strength and result in breakage.
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Pyrex should not be subjected to direct heat sources
Pyrex is a brand of glass cookware that has been manufactured since 1915. It was first made using borosilicate glass, which made Pyrex thermal shock-resistant. However, despite its durability, Pyrex should not be subjected to direct heat sources.
Pyrex should not be used on the stovetop, under an open flame, electric burner, grill, or toaster oven. These direct heat sources can cause the glass to shatter or break. When exposed to direct heat, the glass can undergo thermal expansion, making it more likely to break. This is why it is important to avoid placing Pyrex on a hot pan or any hot surface, as this can cause thermal shock and lead to breakage.
Additionally, it is crucial to avoid sudden temperature changes when using Pyrex. Do not add liquid to hot glassware or place hot glassware on a wet or cool surface. Always allow Pyrex to cool to room temperature before placing it in water or transferring it to the freezer, refrigerator, or preheated oven. By following these precautions, you can help prevent the glass from shattering and ensure the longevity of your Pyrex cookware.
It is also important to note that vintage Pyrex may have additional considerations. While vintage Pyrex can generally be used in the oven, it is crucial to avoid using any dishes that are chipped or cracked as this can lead to further cracking or the release of glass chips.
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Pyrex should not be cleaned with abrasive cleansers
Pyrex is a staple of home cooking, with its durability and versatility allowing it to be passed down through generations. While Pyrex is indeed durable, it is not indestructible and can be susceptible to breakage if exposed to direct heat sources or sudden temperature changes.
Some people recommend using abrasive cleansers like Bar Keepers Friend, The Pink Stuff, or oven cleaner for heavily soiled Pyrex. However, this should be done with caution, especially for vintage Pyrex, as these products can leave scratches. A gentler approach is to use a non-scratching scouring powder, such as Bon Ami, or a damp Magic Eraser, which serves as both a cleaner and a sponge. For light to moderate gunk, a power wash dish soap containing isopropyl alcohol can be effective.
Pyrex should always be handled with care, especially when hot. It should never be placed on a cold or wet surface, and hot glass should never be touched with bare hands.
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Pyrex should not be used to cook food that requires high heat
Pyrex is a brand of glass cookware that has been manufactured since 1915. It was the first home cookware to be made with temperature-resistant glass, called borosilicate glass, which was originally used for scientific laboratory equipment and railroad lanterns. However, Pyrex is no longer made of the same type of glass. Today, Pyrex manufactures both soda-lime and borosilicate glass products.
While Pyrex is safe for use in the oven, it should not be used to cook food that requires high heat. This is because Pyrex glassware should not be exposed to direct heat sources. Pyrex should not be used on the stovetop, under the broiler, in a toaster oven, or on a barbecue grill. These types of use expose Pyrex to potentially damaging direct heat sources. Failure to follow the manufacturer's safety instructions may result in personal injury and/or property damage.
Pyrex glassware is susceptible to breakage if exposed to high temperatures or sudden temperature changes. To avoid breakage, it is important to avoid placing hot Pyrex on a cold or wet surface. Instead, hot Pyrex cookware should be placed on a dry cloth, potholder, wooden trivet, or cutting board. Additionally, it is recommended to use medium to low heat when cooking with Pyrex for the best results. Extremely high temperatures can cause discolouration and shorten the life of the non-stick finish.
It is also important to note that not all Pyrex products are oven-safe. Pyrex measuring cups, for example, are intended for food preparation and cooking only and have not been tested for oven use. Always refer to the manufacturer's safety instructions before using any Pyrex product.
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Frequently asked questions
No, Pyrex should never come into direct contact with any type of heating element.
Pyrex is susceptible to breakage when exposed to extreme temperature changes.
Pyrex should not be used on stovetops, under the broiler, in toaster ovens, or on grills. It should also never be placed on cold or wet surfaces.
Pyrex is made of borosilicate glass, which is thermal shock resistant.
Yes, Pyrex is oven-safe up to temperatures of 425°F.









































