20 Pieces Foam Stopper Plastic Foam Plug 50mm Openings for Tubes and Flasks, Beer Making, Yeast StarterMore Info
From the product description, check product page for current description, price and availability:
- Autoclavable: yes
- Material: borosilicate glass
- Tolerance (ml): 0.05
- Description: erlenmeyer flask, glass, 2000 ml, 1/pk
- Graduation interval (ml): 400
Made with durable borosilicate 3.3 glass and featuring a heavy-duty rim with narrow-mouth opening there are very few applications these flasks cannot handle. Economical option for everyday use flasks easy read graduations withstands wide temperature range -50 to 550ºc graduated tolerances to 0.05 autoclavable.
50 mm is about 2″. Since this is foam it has some flexibility.
Also Consider: StirStarter Stir Plate – via Valuebrew – includes free shipping to US addresses
9/16/21 11 AM Central: These are selling for just $11.99. Shipping is also free to many US addresses with Prime Membership [Try Prime for Free] or a qualifying order. Prices and availability can change quickly. Check product page for current info – More About Prices
20 Pieces Foam Stopper Plastic Foam Plug 50mm Openings for Tubes and Flasks, Beer Making, Yeast Starter – note that multiple variations of this product may be available, as such a different version may appear at this link