Thanks so much Anyone with a Le Creuset or similar enamel-coated pot knows what a challenge it can be to clean this type of cookware.CHOW.com's Katy Davies shares an unusual trick to help get even the most burnt dishes clean!├ A Glossary of Terms ├ Dating Pyrex Kitchenware ├ Pyrex Ware Patterns │├ Pyrex Pattern List │├ Pyrex Pattern Browser │└ Pyrex Pattern Timeline │ ├ Standard Patterns │ └ Non-Standard Patterns ├ Pyrex Opal Ware Shapes ├ Pyrex Model Numbers ├ About Pyrex Item Numbers ├ About Pyrex Colors ├ Pyrex Solid Colors ID Chart ├ Pyrex Promo Accessory ID ├ Vintage Pyrex Advertising ├ Pyrex Catalogs & Brochures ├ Patent Database ├ Videos & Links └ Accessories/Books/Apparel Estimating the age of Pyrex opal glass kitchenware can most often be done by observing a few basic characteristics. Production of opal ware commenced in 1936 after the merger with Mac Beth-Evans Glass Co. The plant there would be used to produce a more durable messware for the military. in a downward curve below forming a broken circle of sorts around the name. No model number or other information was included on the earliest pieces. 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. These appear to be related to either molds or production runs. Patterns The first pieces to have a decorative graphical pattern applied appear to have debuted in 1956.While colors and styles of decoration reflected consumer tastes at the time of production, the first thing to look at is the backstamp. But the product would not be branded Pyrex until the debut of kitchenware made from it nearly a decade later. New patterns were introduced in keeping with changing tastes, so they can also give clues as to time period.All glass-ceramic materials can be broken and care should be taken in handling.Accidental breakage from impact is not covered by warranty.Backstamps On the bottom of most every genuine Pyrex opalware article is an embossed set of markings which contains a variety of information. The backstamp seen on various items prior to that echoes a Mac Beth-Evans trademark, but one not previously used on their glassware: that of a glassblower, or "gaffer", nicknamed "Little Joe". Since pattern collections and promotional pieces were available for relatively finite periods, knowing their years of introduction and discontinuance can also help narrow down dating somewhat.
This warranty does not cover damage resulting from negligence, misuse, abuse, institutional/commercial use or purposes other than normal household use.
Read these Instructions and Warranties Carefully and Save them for future Reference As with all glass products, you must exercise an appropriate degree of care, especially when cooking food at high temperatures.
There are two primary risks associated with using glass-ceramic products for cooking.
When visiting my local thrift stores, I've picked up a few of the old pyroceram pieces that are microwave/ range/ freezer/ stove safe.
Unfortunately, since they're so old, I'm having a hard time cleaning the baked on food or stains that their previous owners have left and were also unable to clean.
World Kitchen, LLC promises to replace any glass-ceramic (bowl) cookware item that breaks from hot or cold temperatures within 2 years from date of purchase.