Glass boiling flask-- heavy duty glass uniform wall thickness distribution, and practical
Three-neck boiling flask-- round bottom design having spherical bottoms are more resistant to fracturing under vacuum, as a sphere more evenly distributes stress across its surface. and allows more uniform heating or boiling of a liquid
Outer flask-- comparing to the single neck or twin neck flask,the 3 neck flasks have one more jointed neck for extra function, when it is not needed, the extra necks can be stopped by head glass stoppers
Three-neck flask-- well made of premium borosilicate glass with minimal thermal expansion, giving relatively high resistance to temperature changes
Terrariums-- widely used for education, chemistry, research, or life science