Do not apply direct heat to the flask.
Works great with a stir plate.
Customer ReviewsWrite a review
Arrived on time and did what I needed it do for a fair price.
Not the thickest of glass, but works well!
Great tool to get yeast started. Wish I could remember stir bar
I haven’t yet bought one (but it’s next on my list). I was waiting until the flasks were confirmed to be made of borosilicate glass (e.g. Pyrex) that resists thermal expansion. If the product shipped is in fact what is shown in the photo (United Scientific FG 4980), then we’re all set! United’s website affirms the glass is borosilicate, which means they are designed to resist shattering when rapidly taken from hot to cold temperatures. Adding to my wishlist now!
Product was shipped and received quickly, and just as stated in the description.