Go to this site for sizes, but here is an explanation:
Our Pyrex brand and Borofloat sight glasses are made from borosilicate glass. We also offer Vycor brand sight glasses which are made of number 7900 96% silica glass. Both are widely used in industry and are well known for their mechanical, chemical and thermal stability. A noteworthy difference between our Pyrex and Vycor brand sight glasses is that Pyrex can be heat treated or tempered to about 3 times its annealed strength, but Vycor cannot be tempered due to its extreme heating temperature.
* http://www.kaufmanglass.com/safety.htm
Pyrex is the trade name of a Corning low thermal expansion glass. All Pyrex is glass, not all glass is Pyrex.
I would have to say Pyrex
Pyrex is borosilicate glass and like all glass does not absorb any chemicals.
"Foggy Pyrex" typically refers to a cloudy or hazy appearance that develops on glass Pyrex baking dishes over time. This can occur due to mineral deposits from hard water, oils, or residue from food. Cleaning the Pyrex with vinegar, baking soda, or a commercial cleaner can help remove the foggy appearance.
Pyrex glass is designed to withstand sudden & drastic TEMPERATURE changes. Most glass will shatter with sudden temperature changes. Pyrex is not bulletproof. Most transparent bulletproof material (glass) is composed of several layers of plastic & glass sandwiched together. The plastic holds the glass together, while the glass absorbs a bullet's impact.
It is a glass formulated to resist thermal shock.
It is not recommended to use a glass cup for a vaporizer as it may not be able to withstand the high temperatures produced by the device. It is best to use the recommended materials that are designed specifically for use with vaporizers to ensure safety and effectiveness.
Pyrex is just a brand name of toughened, heat-resistant glass.
Pyrex is perfect for microwaving because it is made of glass. Glass is safe to go in the microwave and it will not contaminate your food.
Separate companies. Pyrex is licensed now by World kitchen which was the pyrex glass division that Corning spun off. World kitchen now makes the glass ware in PA out of soda-lime glass rather than the more durable borosilicate glass. In the EU pyrex is still made out of borosilicate glass. Anchor hocking is a separate 2nd largest glassware company.
Hydrofluoric acid is a chemical that can harm Pyrex glass due to its ability to etch or corrode the glass surface. Pyrex glass is quite resilient to most chemicals, but strong acids like hydrofluoric acid can cause damage.
Pyrex is anothe anme fore borosilicate. They are names for glass which are heat resistance and are used in laboratories.