Erlenmeyer Flasks Narrow Neck

Erlenmeyer flasks with narrow necks are used for mixing, boiling, and storing liquids, particularly in titrations and recrystallization processes.
The narrow neck facilitates controlled pouring and minimizes spillage, while also allowing for the attachment of filter funnels. In microbiology, they are used for cell cultures, with vented closures for gas exchange during shaking.

Here’s a more Erlenmeyer Flasks Narrow Neck detailed breakdown:
1. Mixing and Titration:
The flask’s conical shape and narrow neck allow for easy swirling of the contents without risk of spillage, making it ideal for titrations.
The narrow neck also allows for precise addition of reagents from a burette during titration procedures.
2. Boiling and Recrystallization:
The narrow neck helps to minimize solvent loss during boiling by allowing condensed vapor to drip back into the flask.
In recrystallization, the narrow neck supports filter funnels, facilitating the hot filtration process.
3. Microbiology:
Erlenmeyer flasks, especially those with vented closures, are used in microbiology for culturing microorganisms.
The vented closures allow for gas exchange during incubation and shaking of the cultures.
4. General Laboratory Use:
They are suitable for heating and storing liquids, including solutions used in various chemical and biological experiments.
The narrow neck can also help to reduce contamination risks when handling sensitive materials.
Key Features and Considerations:
Material:
Erlenmeyer flasks are commonly made of borosilicate glass (like Pyrex or Duran) for its heat and chemical resistance.
Capacity:
Available in various sizes, from small (e.g., 50ml) to large (e.g., 1000ml or more).
Neck Design:
The narrow neck is crucial for controlled pouring, minimizing spillage, and supporting filter funnels.
Sterilization:
For microbiology applications, flasks are often sterilized before use.
Cleaning:
Proper cleaning after each use is important to prevent residue buildup and contamination.

Erlenmeyer Flasks Narrow Neck

Erlenmeyer Flasks Narrow Neck

The slanted sides and narrow neck of this flask allow the contents of the flask to be mixed by swirling, without risk of spillage, making them suitable for titrations by placing it under the buret and adding solvent and the indicator in the Erlenmeyer flask.