Conical Flask (Erlenmeyer Flask):

• A conical flask, also known as an Erlenmeyer flask or titration flask, is a type of laboratory glassware.
• It features a wide, flat bottom and an inverted cylindrical neck.
• The flask is primarily used for transportation, storage, and mixing of liquids in scientific work.
• German chemist Richard August Carl Emil Erlenmeyer introduced it in 1860.
• Most conical flasks are made of heat-resistant borosilicate glass, which allows them to withstand thermal stress.

Features of Conical Flask:

• Shape: Smooth cylindrical shape with a narrow neck and broad base.
• Precise Graduation: Clear and visible graduation marks on the neck.
• Wide Round Neck Opening: Facilitates easy pouring and cleaning.
• Heat Resistant: Borosilicate glass construction ensures heat tolerance.
• High Transparency: Excellent clarity due to the glass material.
• Ground Glass Stopper: Some flasks come with a ground glass stopper for airtight sealing, even for gaseous compounds.

Types of Conical Flasks:

• Narrow Mouth: Supports funnels during experiments.
• Wide Mouth: Allows stirring with a rod and easy addition of solid samples.

Available Sizes: Conical flasks are manufactured based on ASTM and ISO specifications. Common sizes include 25 ml, 50 ml, 100 ml, 250 ml, 500 ml, 1000 ml, and larger capacities.

Applications:

• Chemistry: Used for swirling liquids, titration experiments, and boiling liquids. The narrow neck aids in condensing solvents.
• Biology and Microbiology: Useful for various scientific processes involving chemicals and reagents.

Advantages:

• Heat Resistance: Borosilicate glass withstands high temperatures.
• Transparency: Clear visibility during experiments.
• Ground Glass Stopper: Ensures airtight storage.