What is special about Pyrex glass?
Chemically, Pyrex contains borosilicate and expands only about one-third as much as common glass (silicate) when heated. As a result, it is less apt to break when subjected to rapid temperature changes. It is resistant to many chemicals and is an electrical insulator.
Is Pyrex as good as it used to be?
Cooking Light also calls out the fact that if you have vintage Pyrex glassware that’s over 20 years old, it’s a hot commodity. That old casserole dish is sufficiently heat-resistant (and thermal-shock proof) and will withstand even the most extreme temperature changes since it’s of the original glass.
Why is Pyrex useful in the kitchen?
Bessie’s experiments revealed that the borosilicate glassware heated quickly and evenly, its transparency made it easier to monitor the progress of a dish while baking, and it was easy to clean.
Is Pyrex good for cooking?
Pyrex is oven safe and microwave safe, but it isn’t designed for other types of cooking or for use on a direct heat source. Do not use Pyrex on your stovetop (gas or electric), under the broiler, in a toaster oven, or on a grill.
Why do Pyrex dishes explode?
When a Pyrex bowl is heated or cooled rapidly, different parts of the bowl expand or contract by different amounts, causing stress. If the stress is too extreme, the bowl’s structure will fail, causing a spectacular shattering effect.
Why is vintage Pyrex so popular?
Part of Pyrex’s popularity is due to the nostalgia factor. Many collectors love Pyrex simply because it reminds them of childhood. Pyrex lover Sylvia Schanche says she inherited pieces from her mother and grandmother and likes using pieces she remembers as a kid growing up in the 60s and 70s.
Can Pyrex be used on the stovetop?
A hot plate surface can be very hot for glass. A stove top can bring the right type of Pyrex or glass pot up to a good temperature without cracking or damaging the cookware.
Can Pyrex refrigerator dishes go in the oven?
You can use a Pyrex oven-safe dish in a 400-degree oven. Before the first Pyrex pie plate was manufactured in 1916, home cooks didn’t have access to glass bakeware that withstood both high and low temperatures without breaking.
Can Pyrex go on the stove?
Pyrex glass bakeware can be used in used for cooking, baking, reheating food in preheated ovens. Do not put Pyrex in a cold oven. Pyrex bakeware cannot be used or placed on a hot stovetop. Pyrex cookware is stovetop safe.
Can I put Pyrex in the oven from the refrigerator?
It is considered safe, however, to transfer a Pyrex dish directly from the refrigerator or freezer to a hot oven, provided it has been properly preheated — some ovens use the broiler element to heat up to the desired temperature.
Can you pour boiling water into Pyrex?
The effect of thermal shock is powerful and results in the cracking of glass. Even heat-resistant glasses like Pyrex can shatter when poured with boiling water incorrectly. To prevent the glass from cracking when exposed to boiling water, you should avoid extreme and abrupt changes in temperature.
What do you need to know about vintage Pyrex?
These trusty dishes have stood the test of time and are now sought-after collectibles. With dozens of colors, patterns and shapes, collecting vintage Pyrex is an available, durable and generally affordable passion for retro dish lovers everywhere. What Is Pyrex? Pyrex clear glassware was introduced by Corning Glass Works (now Corning Inc.) in 1915.
Is it safe to use Pyrex glass in a microwave?
According to the manufacturer, Pyrex glassware is safe for microwave ovens and conventional ovens. When compared to other brands, Pyrex is sturdy and thicker, making it durable. However, there are a few things that the manufacturer failed to reiterate on the official website.
What kind of glass is Pyrex glass made out of?
This is where the controversy really heats up. The vast majority of glass products are made of soda-lime glass: window panes, jars, bottles, all kinds of glass. Soda-lime glass is cheaper to make than borosilicate glass, which is undoubtedly why Pyrex started experimenting with it.
Is it safe to put Pyrex in the freezer?
The standard temperature of Pyrex bakeware is 450 degrees. However, when increased beyond that, they are more likely to shatter. Even though Pyrex includes a label that indicates bakeware is safe for the oven and freezer, it would be best to avoid extreme temperature changes over time.