There is also labware such as beakers test tubes etc for laboratory use. Until 1998 all pyrex glassware was made with borosilicate glass.

Glass

Pyrex is a trademarked brand name of glass stovetop and baking ware.

Uses of pyrex glass. Corning no longer manufactures or markets consumer glass kitchenware and bakeware. It also has a granular breaking pattern. Glass is made from the same ingredients as pyrex but the tempering methods gives glass entirely different properties.

Glass pressing is used to create thicker pieces of glass. The disadvantage of glass cookware is that it does not conduct heat as well as metal does. Drawing is used to create tubing or rods.

The molten glass is put into a mold and a plunger is lowered which forces the glass to spread and fill the mold. The glass cools inside the mold and conforms to the shape. In 1915 for a line of clear low thermal expansion borosilicate glass used for laboratory glassware and kitchenware it was later expanded to include clear and opal ware products made of soda lime glass.

Pyrex trademarked as pyrex is a brand introduced by corning inc. At that time the company developed a new formula for aluminosilicate glass which it used to create a line of frying pans called pyrex flameware. Pyrex is stronger than glass becuase it is four to six times harder.

Pyrex is tempered glass often used in cookware test tubes and kitchen accessories. Concept of glass cap packaging with bcb sealing ring. Pyrex glassware is dishwasher safe and may be washed by hand using non abrasive cleansers and plastic or nylon cleaning pads if scouring is necessary.

That means that if you have pyrex glassware made before 1998 like this gorgeous vintage design you can safely use it like you always have making a baked mac n cheese casserole and leaving the dish on your cold granite countertop or immediately transferring it to the fridge for tomorrow s dinner. According to pyrex s safety and usage instructions while the glass is designed for temperatures typically used in baking it can break when exposed to the direct heat element while the oven. Pyrex glassware can be used for cooking baking warming and reheating food in microwave ovens and preheated conventional or convection ovens.

The difference between pyrex and glass is that pyrex is tempered glass and used for cook wares whereas glass is mostly used for architecture and furniture. It is made from the expansion of borosilicate glass. This line was discontinued in 1979.

The pyrex glass has been widely used as a packaging material for other mems devices such as gyroscopes and accelerometers. Also it is known that pyrex glass has good rf characteristics and hence it is used as a packaging cap and a rf substrate.