Can pyrex go in the microwave?
Pyrex is a brand of oven-safe glassware that many people use for cooking and baking, but can you microwave Pyrex? The answer may surprise you.
Pyrex has been a popular go-to option for cookware and bakeware for many years. The brand is known for its durability, functionality, and low price point. But with the popularity of microwaves, some consumers are beginning to wonder if they can microwave pyrex dishes.
In this blog post, we’ll explore the safety of microwaving Pyrex and offer some tips for using this type of glassware in the microwave. Read on to learn more!
What Is Pyrex?
Pyrex is a trademarked brand name for tempered glass used in bakeware, cookware, and lab equipment. One of the main differences between pyrex and other types of glass is that it can withstand extreme temperatures without shattering.
Pyrex was invented by chemist Jesse T. Littleton while working for Corning Glass Works in 1918 after his wife asked him to develop a cooking pot that could withstand the high-temperature variations he created while experimenting with new glass mixtures .
The first pyrex products were produced in 1915 but did not become commercially available until 1920. Pyrex became popular among homemakers because no other material could hold up to such high temperatures, especially when placed directly on stovetops.
Additionally, because it is made of tempered glass, pyrex was shatter-resistant and durable. This meant that it could be used to cook everything from meatloaf to apple crisp.
Pyrex’s popularity skyrocketed in the 1970s when Corning released a series of bakeware sets with brightly colored lids. Consumers preferred these products because they were easy to identify in crowded kitchen cabinets.
Pyrex later became popular again when companies such as Target began producing products for a lower cost than those sold by Corning. In 2011, an estimated 45% of American households owned at least one piece of Pyrex bakeware, compared to just 28% in 2003.
Today, pyrex continues to be a popular choice among home cooks and professional chefs. For example, the moist heat cooking method used by many restaurants to prepare french fries requires cooks to submerge food in heavily salted, near-boiling water for extended periods of time.
Because this method is difficult to execute properly with other materials, some fast-food chains such as McDonald’s prefer pyrex containers.
Can You Microwave Pyrex?
Pyrex is a brand of heat-resistant glass that can be used in the microwave. However, there are some safety concerns when cooking with pyrex in the microwave.
Pyrex is specifically designed to go from the freezer to the oven or microwave. Pyrex glass does not warp or get ruined when heated up in a microwave.
However, over time repeated exposure to high heat may cause damage. But it takes a lot of microwaving for this to happen, more than most of us are willing to do!
The label on your Pyrex container tells you that it’s safe for use in the microwave and oven. If there’s any sort of warning against using your Pyrex for either freezing or cooking, then don’t use it.
What Temperatures Are Considered Safe for Microwave Pyrex?
In general, microwave pyrex should not be used at temperatures above 450 degrees Fahrenheit. If it is exposed to a high-temperature environment, the glass will become stressed and may crack or shatter under certain conditions.
Some other safety precautions for microwave products:
If you have a cut, burn, or another injury on your hands, it is important that you not touch the inside of your microwave oven as this can cause further damage to the wound.
- Always use an oven mitt when touching a hot dish in order to prevent burns.
- Do not put plastic wrap in the microwave if it has metal in it (most do), this can cause arcing which can harm any nearby person or appliance with electrical components.
- Do not place foil-covered foods directly onto oven racks as this may damage the interior of your oven.
- Last but not least, always use oven mitts and only use the microwave with the doors closed.
If you follow these precautions, you will be less likely to experience damage or injury from using your microwave oven.
Can You Microwave Pyrex Lids?
Yes, you can microwave pyrex lids. It is safe to put your glass lid in the microwave oven for heating purposes. However, there are some things you should follow before putting it in the oven:
- First of all, make sure that your lid is a pyrex lid and not another kind of metal or plastic cover. This is because pyrex lids are made from tempered soda lime silicate glass which can resist extreme temperature changes without breaking or exploding.
- Next thing, check if your container itself contains any metal parts such as a wire bale around the rim or grommets on the side for securing certain handles. In this case, it would be dangerous to put this particular container near high voltage wires or something similar when it is in the microwave oven.
- Lastly, check your lid if it has the label “for microwave use only.” If you have one that bears this label then better keep it just for heating purposes since its material may not be tempered or made of soda-lime silicate glass.
After checking all these things, you’re ready to put your pyrex lid in the oven and heat up whatever food you want! Also, don’t forget to remove any metallic tags on the container before using it in the oven.
Which Pyrex Dish is The Best for Microwaving?
It is hard to find such a thing as ‘the best pyrex dish for microwaving’. Pyrex, like any other cookware, has many pros and cons. However, many people want to find the pyrex glass jug and consider it the most convenient thing for microwaving.
On the plus side: Pyrex is oven proof up to 400 degrees Fahrenheit; Pyrex can be refrigerated or frozen (although not Bake-and-Freeze style); and it’s resistant to breakage from thermal shock (that is, if you pour hot food in one place and cold food in another place, the two won’t mix).
On the downside: It’s made of glass so you can’t use metal utensils on it. If you have acid-based foods in your pyrex dish, say marinara sauce with pasta or spaghetti sauce with wine, or lemon bars with lots of citrus juice, metal utensils can leave dark gray streaks in your pyrex.
If you have alkaline-based foods in your pyrex dish, say tomato sauce with fresh tomatoes which are slightly acidic but also include carrots and onion, or spaghetti sauce without wine so the acidity is reduced, then you should be OK provided you wash immediately after use.
Pyrex is somewhat more expensive than other brands of glass cookware. Pyrex dishes are made to high standards so they’re very nice to have around for serving as well as cooking.
Pyrex bake-and-freeze style dishes are microwave safe but do not stand up well to microwaving because they’re subject to thermal shock and there’s a greater chance of breakage.
All that said, any pyrex dish should work fine in the microwave if you’re careful to not subject it to extremes of temperature because all cookware made out of glass is susceptible to thermal shock. That means don’t put a cold dish into hot food, or a hot dish into cold food. Remove either the cold or the hot before you put your pyrex pan into your microwave.
If you want to buy new dishes specifically for microwaving use only, there are other brands available besides pyrex which have variations on bake-and-freeze style cooking and are microwave safe without being subject to thermal shock.
One example is Anchor Hocking’s Snapware line of glass dishes with plastic lids which has many useful shapes and sizes including square, round and rectangular. I’ve found Snapware to be just as good for microwaving use only in the oven as well, though you still shouldn’t put them under a broiler or in the dishwasher.
Can Pyrex Go From Freezer to Microwave?
The answer is yes. Pyrex can go from freezer to microwave without any consequences.
Glass bakeware has long been favored for its versatility and durability, but some consumers wonder if it’s safe to put glass bakeware in the microwave.
The issue is that Pyrex contains a chemical known as borosilicate or BPS, which gives the glass its strength and heat resistance.
However, there are varieties of Pyrex on the market made with soda-lime instead of borosilicate, so it may be necessary to check product labeling before microwaving anything made out of Pyrex.
Pyrex Glass Cups Will Not Splatter or Boil Over During Microwave Cooking
Using straight-sided glasses like these might be a bit more forgiving in terms of microwaving. If you must stack two Pyrex cups in the microwave, make sure they are touching each other before closing the door and cooking your food.
Are all Pyrex Dishes Microwaves Safe?
Good news: all pyrex dishes are microwavable. But, there are a few tips to follow to ensure your safety and product longevity.
First off, if you’ve got a dish without a lid, snap one on before zapping it in the microwave. No matter what kind of pyrex you have, never heat an empty dish. The sudden change in temperature can cause your pyrex piece to crack or shatter from thermal shock.
According to Swiss Diamond’s website, the manufacturer puts its products through very rigorous testing procedures that guarantee whether or not you have a stovetop or oven-safe product. So, rest assured that anything with the Swiss Diamond label is safe for use in any type of vessel, including microwaves.
How To Avoid Pyrex from Exploding?
Pyrex is a type of glass that is created for canning and cooking because it can withstand high temperatures, but when something happens to the temperature levels while the Pyrex is under pressure, such as if you put your Pyrex in water even after it has been heated or expose it to sudden changes in temperature, like pouring cold liquid directly into the container.
These things could cause pyrex to explode due to uneven heating times and pressures. Here are some tips on how not to make this happen:
- Don’t transfer hot food from a pot straight into a dish made from Pyrex. Always put a towel down first so that your hand doesn’t get burned and then let cool slightly before transferring into another dish that was previously kept at room temperature.
- Don’t be too quick to take your Pyrex container out of the oven. The temperature might still rise after you have removed it from the source of heat, so make sure the glass has settled before moving or touching it.
- Do not put hot Pyrex dishes on cold surfaces because this can cause uneven heating and lead to explosions. Instead, put them on a level surface that is meant for cooling down your dishes like a counter or stovetop.
- Don’t shake or bump your Pyrex dish around while cooking or taking it out of the oven just in case it does explode. It’s better to play it safe than sorry.
- Don’t leave Pyrex containers unattended when microwaving food inside them, even if you think they are microwave-safe.
- Don’t leave Pyrex containers in the sink for extended periods of time because it might devalue the quality of the container and increase the chances that it will explode under pressure (not to mention leaving any metal unattended near heat is never good).
- Do not put cold liquid into hot Pyrex dishes because this can cause them to break, especially if they are exposed directly to sudden temperature changes like pouring cold liquid into a very hot dish.
The above tips should help you to understand how to handle Pyrex safely and avoid making any dangerous mistakes that could make your glassware explode under pressure, which is the worst thing that could happen in most cases!
If this ever does happen to you or you have any questions, then be sure to contact us here at The Glass Supply Store so we can help you out with all of your glassware needs! Thanks for reading our blog today!
Tips for Microwaving Pyrex
Pyrex is a popular item in many homes but can be dangerous if microwaved. The dish itself is designed to withstand heat up to 450 degrees Fahrenheit; it’s what the pyrex glass is treated with, causing it to turn from clear to opaque white when heated.
However, microwaves heat at much lower temperatures than ovens, only about half as hot (around 225F). This means that microwaving your dinner could cause the very material holding it together to melt apart or worse!
Microwaving anything in pyrex has its benefits like how you don’t need any extra oils or fats since the cooking vessel will distribute heat evenly and cook your food quickly. However, there are some basic precautions you should take before heating up your pyrex in the microwave.
First, you should check to see if your pyrex is dishwasher safe. Not only can putting it in the dishwasher cause it to break down but also microwaving pie dishes and casserole dishes may not be a good idea unless they are labeled safe.
If the bottom of your pyrex is white (or black) instead of clear, you should never heat it up in the microwave; this isn’t because the darker color will absorb more heat, but rather because it’s no longer able to transmit light like glass normally would (and thus microwaves won’t pass through properly).
If there are any chips or cracks on your surface (even if they’re minuscule), do not microwave that dish. If the surface of your dish is old enough that it no longer has a logo or stamp on it, you should probably avoid microwaving it, too.
There are some tricks you can try before giving up on your pyrex for good. Try plopping down your dish full of food in some water immediately after removing it from the microwave; this will cool the glass quickly and hopefully reduce any shattering that might be happening inside.
If you’re microwaving something with a wrapper, like a Hot Pocket®, try prying open one end before heating to allow steam to escape, otherwise, there’s a very real risk of implosion if the pressure builds up too much while cooking.
You can also try using oven mitts when removing dishes out from the microwave to avoid injury from any shattering that might happen. Finally, always remember to let your pyrex cool down completely before taking it out of the oven or putting it in the fridge, as these actions can also cause breakage.
Now you’re ready to heat up those leftovers! Just be sure not to use a plate under a dish that’s microwaving, a good rule of thumb is that whatever doesn’t touch your food should stay outside. And for goodness sake, never ever put glass or ceramic dishes right on top of your food; this will result in burnt spots and overheated edges surrounding the pyrex itself (which is what we want to avoid).
Keeping these tips in mind will ensure you get all of the benefits of your pyrex including easy clean-up, accent lighting in the kitchen, and the joy of microwaving without having to worry about safety with none of the dangers.
Frequently Asked Questions
- What should I do if my pyrex pan is broken?
If your pyrex dish has a crack in it, you should throw it away immediately. Be aware that the glass can break down with repeated heating, or sometimes just from being heated up once or twice. If this happens, be careful when removing the lid from the microwave to avoid getting any shards of glass into your food, and always let a dish cool before touching it again with bare hands.
- What makes it different from regular glass?
Pyrex is made of borosilicate glass, which means that instead of the standard silica compounds found in ordinary glass, it contains sodium and boron trioxide. This unique compound helps make the material heat-resistant.
Because of its high melting point (about 3,000 degrees Fahrenheit), borosilicate glass doesn’t become molten until around 450 degrees Fahrenheit which is about 200 degrees higher than silicate glasses can withstand before they start to melt.
So although microwaves won’t damage your pyrex dishes with normal use, be careful about using it as a plate to serve food if you’re heating things up right out of the oven!
- Are there any special safety precautions?
If your dish has chips or cracks in it, do not microwave. If the bottom is chipped or cracked, don’t use it as a plate either, this increases the risk of breakage from heat exposure. Be sure to let your pyrex cool completely before removing it from the oven and putting it in the fridge, as these actions can also cause breakage.
In addition, never put pyrex directly on top of food unless you want to make a stovetop-like effect! The surface temperature of your pan might be enough to burn food without actually heating up your dish. To avoid burns and injuries altogether, always use oven mitts when handling heated program products.
- Can I put a pyrex dish on top of the food?
No, this could result in overheated edges and burnt spots surrounding the surface.
- What happens if I don’t let pyrex cool first?
It might break due to rapid temperature changes from hot food being placed onto a cold surface or vice versa. Do not use it as a plate until completely cooled down!
Is microwaving safe for empty dishes? Yes, providing there is no plastic component to the lid (e.g., a spout). But make sure that there isn’t any foil underneath your food — metal can act as an antenna for microwave radiation, which will cause arcing inside your oven and damage your pyrex.
- Can I use pyrex to heat food in the oven?
No, this will cause the outside of the dish to get very hot and could lead to breakage and dangerous burns, not to mention a fire hazard! Use other dishes for baking.
- Who invented Pyrex?
Corning Glass Works, which is now called Corning Incorporated, created Pyrex in 1895 by adding borax (a type of mineral) to their glass mix. The material was originally used as laboratory equipment due to its ability to withstand high temperatures without breaking or melting. It wasn’t until 1988 that Corning began producing consumer cookware using borosilicate glass.
Can you microwave Pyrex? The simple answer is yes, but there are a few things you should keep in mind. Pyrex glassware is sturdy and can withstand the heat of microwaving, but some of the plastic lids and snap bases can’t.
Make sure to read the labels to see what is safe to microwave. Also, be careful not to overcook food in the microwave, as this can cause Pyrex dishes to break. With these tips in mind, you can safely enjoy your favorite Pyrex dishes in the microwave.