I have some old painted Pyrex bowls. Over time the paint is coming off and I have often wondered if it is lead-based paint. I just did a home lead test that came out POSITIVE for lead. I don't find much on the web about this but I urge caution if you have any of these bowls. I have thrown my away.
Yes, I did the same thing- tested my bowls with a home kit and they turned red (positive ) BUT I called the Pyrex company (got the number from their website)and they assured me that all of their products (even the old ones)were in the safe lead limits set by California standards (which have the toughest standards). I also talked with a lead expert and she did say that those home kits could have false positives. I would love to know why the bowls tested high for lead (the yellow testing liquid turned bright red in the kit and usually the redder it is the higher the lead count). I trust the rep. I talked with on the phone- she had exact numbers and stats so I don't know what is up but I feel better having used those bowls for years!
"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.
selon wikipedia dans heat capacity, glass, pyrex = 0753 J/K g
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.
Pyrex changed its glass formula in 1998 from borosilicate to tempered soda-lime glass.
No, a Bunsen burner is typically made of metal, specifically brass or stainless steel. Pyrex is a type of borosilicate glass that is commonly used for laboratory glassware such as beakers and test tubes.
Pyrex was created in 1915.
Corning Pyrex was introduced in 1915.
Yes, you can put Pyrex in the freezer for storage.
Pyrex is just a brand name of toughened, heat-resistant glass.
Yes, Pyrex lids are generally microwave safe.
No, not all glass is made from Pyrex. Pyrex is a brand name for a type of borosilicate glass that is known for its durability and resistance to thermal shock. There are many other types of glass with different compositions and properties used for various applications.
I would have to say Pyrex
Yes, there is a 11" x 13" Pyrex dish.
There are several places where someone can get Pyrex Portables for a picnic. Stores such as, Walmart, Kmart and Target all sell Pyrex Portables that can be used for a picnic.
Pyrex is anothe anme fore borosilicate. They are names for glass which are heat resistance and are used in laboratories.
Check for the oven safe symbol on the Pyrex dish.
The refractive index of Pyrex glass is typically around 1.47 for visible light. This value may vary slightly depending on the specific composition and thickness of the Pyrex glass.