Thanks for the link! I didn't know they were using soda-lime glass and still call it Pyrex. In the meantime, the Pyrex labware remains real: I routinely pour li

Thanks for the link! I didn't know they were using soda-lime glass and still call it Pyrex. In the meantime, the Pyrex labware remains real: I routinely pour liquid nitrogen into room-temperature Pyrex beakers without issue. That is a sudden temperature change of 220°C or 400°F.