Pyrex® brand, Florence, flat bottom boiling flask, long neck. Series 4060.
This 2000ml Pyrex florence flask is manufactured with carefully controlled wall thickness for proper balance between thermal expansion and mechanical strength.
It features excellent chemical durability which provides contamination-free results and long life under the toughest lab conditions. The flask's ring neck is precisely tooled for uniform stopper fit; and the reinforced rim increases mechanical strength. It also has an extra large marking area.
The Florence Flask is used for heating subtances that need to be heated evenly. The bulbed bottom allows the heat to distribute through the liquid more evenly. The Florence Flask is mostly used in distillation experiments.