Pyrex Borosilicate Glass Short Neck Round Bottom Boiling Flask with 19/38 Standard Taper Joint, 50ml Capacity (Case of 12)

Wall thicknesses are carefully controlled to provide the proper balance between thermal expansion and mechanical strength for greater shock resistance. Excellent chemical durability provides contamination-free results and long life under the toughest lab conditions. These flasks are used in applications requiring rigid stoppering and as wash bottles in routine lab washing.

• Carefully designed and manufactured from borosilicate glass
• Normal working temperatures for PYREX brand boiling flasks is 230°C
• Precisely tooled for uniform stopper fit
• Reinforced rim increases mechanical strength
• Designed for long tube life and maximum safety