When it comes to bakeware, most reports of exploding cookware—such as this article by Gizmodo or various local news reports—are largely focused on Pyrex. Always let them cool (preferably on a dry towel, not a cold counter) completely first. Although tempered glass can better withstand thermal shock than regular soda-lime glass can, it’s not as resilient to such stress as borosilicate. Shades of color can also be a clue to age. 1950 or shortly thereafter, the registered trademark symbol "®" was added below the name, the encircling wording became TRADE MARK above the name, with MADE IN U.S.A. below. Send me an email when my question is answered. Especially if you plan to dish up your dinner with a metal spoon. 6. OFF. The configuration of the backstamp would undergo a few revisions after the introduction of opal glass kitchenware in 1945. “But they can’t as long as they’re balanced by compression on the outside.” That balance makes the glass more resistant to breaking if you drop it and more resistant to thermal shock, which is why it makes an excellent choice for tableware (our top-pick drinking glasses are tempered) and works well for bakeware. Variations in the red 2-1/2 quart mixing bowls encountered are owed to their differing heritages. Family safety warning: Glass bakeware that shatters, Consumer Reports, December 22, 2010, 10. We’re having technical issues, but we’ll be back in a flash. Untreated soda-lime glass is far more likely than the others to break from a tumble off your table. Thanks to the glass construction, it moves effortlessly from refrigerator to microwave to freezer to dishwasher with ease, so you can prep, serve and store all in one convenient dish. The different backstamp styles, consistent with the era of manufacture, serve to identify from which timeframe an individual example was made. Any 4-quart #404 bowl in a color of other than yellow must therefore be dated no earlier than 1949. You have up to 90 days after the in-store purchase, order pickup, or ship date to exchange or return, unless noted in the exceptions in our policy. “I assume they’ve done a lot of work to make sure that the cooling rates of the different parts of the pan cool about equally, but it’s pretty difficult to do that.” Aside from improper tempering, various flaws can weaken the structure of the glass and make it more prone to breakage. This could be because they’re not familiar with Pyrex’s switch to tempered glass (which has a lower resistance to thermal stress), or because they’ve simply neglected to follow the manufacturer’s instructions. Again, the sudden change in temperature could cause breakage. All Pyrex color ware was discontinued after about 1986. Considering these warnings, I feel pretty good about my decision to hold off on the cold glass/hot pan scenario. They are not indicative of dating. On the bottom of most every genuine Pyrex opalware article is an embossed set of markings which contains a variety of information. Until 1998, all Pyrex glassware was made with borosilicate glass. Jane Cook, PhD, former chief scientist at the Corning Museum of Glass, email and phone interviews, December 1, 2016, 5. Thanks to the glass construction, it moves effortlessly from refrigerator to microwave to freezer to dishwasher with ease, so you can prep, serve … Looking into it further, I saw that Pyrex doesn't specifically warn against placing cold glass on a hot surface. Starting in the mid-1970s, equivalent metric capacities were also embossed on pieces, therefore any seen so-marked can be dated positively later than that. Add liquid prior to cooking meat or vegetables. The point here is to avoid subjecting the hot glass to cool liquids, such as juices that might seep out of foods while cooking. Thank you for sharing your thoughts with us, Kyle. Oven or microwave, veggies or pies, these plates serve us well for years and only need replacement b/c the children take them for their homes! That’s fewer than 10 a month across the entire United States. To revisit this article, select My⁠ ⁠Account, then View saved stories. It sounds obvious, but you can help extend the life of your glass bakeware and tableware by treating it with care. Contest-Winning Broccoli Chicken Casserole, German Schnitzel and Potatoes with Gorgonzola Cream, Contest-Winning Chicken Wild Rice Casserole, How to Make Ross Geller’s “Moist Maker” Sandwich, How to Make Peanut Butter Cinnamon Snap Cutouts, Do Not Sell My Personal Information – CA Residents, Do not move your Pyrex from one temperature extreme to the other—when you assemble a. Generations of cooks have counted on our glass pie pan, a classic for sweet or savory pies, quiches, cheesecakes and more. below. Here at Walmart.com, we are committed to protecting your privacy. Wasn't sure if this would work but it turned out to be identical to a plate I had gotten many years ago from my mom. and we have not verified it. It's made of nonporous glass and won't absorb food odors, flavors or stains. Choose from contactless Same Day Delivery, Drive Up and more. “The deeper the scratches, the less strong the glass will be,” LaCourse told us. "DO NOT add liquid to hot glassware; place hot glassware on a wet or cool surface, directly on countertop or metal surface, or in sink; or handle hot glassware with wet cloth." It’s literally ripping itself apart. But note that, unlike the reports in the NEISS database, many of these reported incidents don’t involve injury. All rights reserved. This damage can weaken the glass without fully breaking it. Oftentimes the reviewer isn’t even aware that they’ve used the bakeware inappropriately. While colors and styles of decoration reflected consumer tastes at the time of production, the first thing to look at is the backstamp. It’s undeniably alarming when this happens, but the glass experts we spoke to stressed that such an occurrence is rare—and again, the cube-like pieces that tempered glass breaks into are safer than shards of untreated soda-lime glass. [This review was collected as part of a promotion. Metal Bakeware. In many cases, the instances of exploding Pyrex reported to SaferProducts.gov and in various customer reviews online seem to be occurring as a result of people using the bakeware improperly (putting a dish under the broiler, for instance, or adding water to a hot pan). The tempered Pyrex® glass can go directly into a preheated oven, and it heats evenly for consistent results—yet it’s just as great for making no-bake and freezer pies. It can be used for baking, cooking, microwaving, serving and storage. This 9.5-Inch Pie Plate by Pyrex allows you to cook-and-serve straight from the oven to the table, Non-porous glass wont absorb stains or odors, Glass is safe for preheated oven, microwave, fridge freezer and dishwasher, For optimal use and safety always preheat oven before placing glass bakeware in oven, cover bottom of glass bakeware dish with liquid prior to cooking meats or vegetables, and never place glass bakeware directly on burner or stove under broiler. It’s true that tempered glass is more susceptible to thermal shock than borosilicate, but experts disagree on how much more susceptible it is—and we think some calculations may exaggerate the risk under normal use. I highly recommend if you haven't tried it. Plastic lids are BPA free and top-rack dishwasher safe. Don’t place a pie plate or casserole dish directly on a hot oven rack. Here are some tips for minimizing the risk of tempered-glass items spontaneously breaking: You may be wondering: Why use tempered-glass bakeware at all? Promotional patterns may have been available for as little as a holiday season or a year, standard patterns from two years to as long as a decade in a few instances. This procedure was developed in conjunction with a committee of glass manufacturers and industry consultants, and it has been tested on a variety of glass samples from all the major glass producers, with the results submitted to an independent lab for analysis. Choose from contactless Same Day Delivery, Drive Up and more. Soda-lime glass is just ordinary glass. REG. The best way to deal with an icky glass dishes is, of course, to avoid the mess in the first place. Pyrex Easy Grab Glass 9.5 Inch Pie Plate (2-Pack) Pyrex glass can be used for storage, baking, serving, cooking and microwaving. The storied glass cookware is great for even heat distribution and classic presentation, but there are some dangers to avoid: Namely flying shards of glass. Please take a minute to review our Privacy Policy. Since customer reviews can last forever online, the mounting complaints about exploding tempered glass can seem unsettling, even though the occurrence is quite rare according to the CPSC and multiple glass experts we spoke to.