I am not a chemist. I do have two Erlenmeyer¹ flasks on the shelf above my desk. One is Pyrex®–the good stuff. They’re both 500 ml and take the standard #7 stopper.
I’m not sure where they came from. Probably a lab at Yale-New Haven years ago when I did science stories on Channel 8.
They are used now for sucking hard boiled eggs to demonstrate the power of atmospheric pressure.
I like them. They help reinforce my inherent geekiness.
¹ – Hats off to Google Chrome. Erlenmeyer is in the browser’s built-in dictionary.