Is there a simple way of distinguishing borosilicate glass from the cheaper soda-lime stuff? Both go under the name Pyrex, but the borosilicate ones are much more resistant to thermal shock than
![Old Pyrex that we've used for years (left) vs new Pyrex that we've only been using for a few months (right). SMH my head. : r/mildlyinfuriating Old Pyrex that we've used for years (left) vs new Pyrex that we've only been using for a few months (right). SMH my head. : r/mildlyinfuriating](https://i.redd.it/cxgo51ar76b81.jpg)
Old Pyrex that we've used for years (left) vs new Pyrex that we've only been using for a few months (right). SMH my head. : r/mildlyinfuriating
![Pyrex Collector's Price Guide 2022-2023: A Collector's Guide To Vintage Rare Pyrex (Paperback) | Penguin Bookshop Pyrex Collector's Price Guide 2022-2023: A Collector's Guide To Vintage Rare Pyrex (Paperback) | Penguin Bookshop](https://images.booksense.com/images/000/328/9798354328000.jpg)
Pyrex Collector's Price Guide 2022-2023: A Collector's Guide To Vintage Rare Pyrex (Paperback) | Penguin Bookshop
![Vintage Pyrex from the '50s: Color bakingware, glass Pyrexware, dinnerware, flameware & more - Click Americana Vintage Pyrex from the '50s: Color bakingware, glass Pyrexware, dinnerware, flameware & more - Click Americana](https://clickamericana.com/wp-content/uploads/Pyrex-For-the-modern-way-to-cook-1955-kitchen-1.jpg)