Erlenmeyer Flask in Laboratory

Parameter list

Conical Flask ( narrow-mouth bottle )
Specification	Inside diameter of bottle mouth	Bottom diameter	Height	Suitable for silicone plug specifications
50ml	17mm	52mm	88mm	16-18
100ml	18mm	65mm	106mm	18-22
150ml	22mm	69mm	116mm	18-22
200ml	22mm	76mm	133mm	18-22
250ml	27mm	81mm	148mm	24-28
300ml	26mm	90mm	155mm	24-28
500ml	34mm	107mm	187mm	33-38
1000ml	35mm	134mm	228mm	33-38
2000ml	47mm	168mm	288mm	44-49
3000ml	49mm	194mm	345mm	48-53
5000ml	59mm	230mm	382mm	-
10000ml	64mm	283mm	448mm	-

 

Conical Flask ( big B bottle )
Specification	Inside diameter of bottle mouth	Bottom diameter	Height	Suitable for silicone plug specifications
50ml	25mm	54mm	82mm	24-28
100ml	30mm	66mm	102mm	27-31
150ml	33mm	75mm	119mm	30-34
200ml	33mm	79mm	148mm	30-34
250ml	34mm	85mm	144mm	33-38
300ml	35mm	89mm	159mm	30-34
500ml	37mm	103mm	189mm	37-41
1000ml	45mm	130mm	215mm	40-45
2000ml	50mm	168mm	288mm	-
3000ml	51mm	190mm	310mm	-

 

Conical Flask ( horn mouth)
Specification	Inside diameter of bottle mouth	Bottom diameter	Height	Suitable for silicone plug specifications
50ml	28mm	54mm	81mm	30-34
100ml	29mm	75mm	107mm	30-34
150ml	32mm	75mm	127mm	33-38
200ml	32mm	79mm	149mm	33-38
250ml	33mm	84mm	145mm	33-38
300ml	33mm	88mm	167mm	33-38
500ml	36mm	103mm	191mm	37-41
1000ml	45mm	128mm	216mm	44-49
2000ml	46mm	167mm	283mm	48-53
3000ml	51mm	190mm	315mm	48-53
5000ml	62mm	235mm	390mm	-

 

Conical Flask ( wide-mouth bottle )
Specification(ml)	Inside diameter of bottle mouth	Bottom diameter	Height	Suitable for silicone plug specifications
50ml	29mm	50mm	86mm	27-31
100ml	30mm	65mm	109mm	27-31
250ml	44mm	86mm	137mm	40-45
500ml	42mm	108mm	176mm	40-45
1000ml	48mm	133mm	226mm	44-49

 

Design and Features

The Erlenmeyer flask in laboratory is characterized by its conical shape, with a narrow neck and a wide base. This design offers several advantages over other types of flasks:

◆ Stability: The wide base provides a stable foundation, reducing the risk of the flask tipping over during experiments.

◆ Heat Distribution: The conical shape ensures even heating, as the larger surface area allows for more efficient heat transfer.

◆ Splash Prevention: The narrow neck minimizes splashing during mixing or stirring, protecting the user and the laboratory environment.

◆ Versatility: The flask can be used for a wide range of experiments, including titrations, mixing solutions, and heating reactions.

The Erlenmeyer flask is typically made of borosilicate glass, which is known for its high resistance to thermal shock and chemical corrosion. This material ensures that the flask can withstand the rigors of laboratory use, including exposure to acids, bases, and other reactive chemicals.

Conical flask are divided into the following categories: 

◆ Conical Flask ( horn mouth ): Horn mouth conical flask are designed to have a flat shape at the neck, similar to the shape of a flared mouth. This design makes it more convenient when pouring substances, and can smoothly guide the flow of liquid or powder, reducing the possibility of splashing.

◆ Conical Flask ( narrow-mouth bottle ): This design facilitates the reaction to be fully carried out while oscillating during the titration process and the liquid is not easy to splash out. The wide bottom can accommodate more solution, which is convenient for various chemical reactions and experimental operations.

◆ Conical Flask ( big B bottle ): The most notable feature of the large B-mouth conical bottle is its large mouth design, which makes it easier to add, pour out substances or stir, reducing the difficulty and time of operation. And this design not only makes the conical bottle more stable when placed, but also easy to hold more solution.

◆ Conical Flask ( wide-mouth bottle ): The wide mouth conical bottle is designed with a wider mouth, which greatly facilitates the experimental operation, such as adding solid reagents or pouring liquids more smoothly. And this shape design is not only conducive to holding more solution, but also allows the reactants to be fully mixed during the oscillation process, while maintaining the stability of the liquid.

The Erlenmeyer flask in laboratory is a versatile tool that finds applications in various laboratory settings. Here are some of the most common uses:

 

◆ Titrations

Titrations are a common analytical technique used to determine the concentration of an unknown solution. In a titration, a known concentration of a standard solution (titrant) is gradually added to the unknown solution until a specific endpoint is reached. The Erlenmeyer flask is ideal for this purpose, as its narrow neck minimizes splashing and allows for precise control over the addition of the titrant.

◆ Mixing Solutions

The Erlenmeyer flask is often used to mix solutions, particularly when stirring or agitation is required. The wide base provides a stable platform for stirring, while the narrow neck prevents splashing. This makes the flask ideal for preparing solutions for subsequent experiments or analyses.

◆ Heating Reactions

The Erlenmeyer flask can be used to heat reactions, either directly over a heat source or in a water bath. The conical shape ensures even heating, reducing the risk of hotspots that can lead to uneven reactions or even explosions. Additionally, the flask's design makes it easy to handle and manipulate during heating procedures.

◆ Storage and Transport

Although not its primary purpose, the Erlenmeyer flask can also be used to store and transport solutions. Its sturdy construction and narrow neck make it suitable for short-term storage of chemicals, particularly when a secure closure is provided. However, it is important to note that the flask is not designed for long-term storage or for use with highly reactive or volatile chemicals.

 

The Erlenmeyer flask has become an essential tool in modern science, particularly in chemistry and related fields. Its versatility and durability have made it a staple in laboratories worldwide, where it is used for a wide range of experiments and analyses.

Moreover, the Erlenmeyer flask serves as a testament to the ingenuity and perseverance of its inventor. Richard Erlenmeyer's dedication to improving laboratory safety and efficiency led to the development of a tool that has revolutionized chemical experimentation. His legacy continues to inspire generations of scientists and researchers, who continue to push the boundaries of knowledge and discovery.

Proper maintenance and care of the Erlenmeyer flask are essential to ensure its longevity and accuracy in experimental results. Here are some tips for maintaining your Erlenmeyer flasks:

◆ Cleaning

Erlenmeyer flasks should be cleaned thoroughly after each use to remove any residue or contamination. They can be washed with soap and water or, for more stubborn residues, with a mild acid or base solution. Ensure that the flask is rinsed thoroughly with water and dried before reuse.

◆ Storage

Store Erlenmeyer flasks in a clean, dry, and well-ventilated area. Avoid stacking them on top of each other, as this can cause scratches or cracks. Instead, use a rack or storage container designed specifically for flasks.

◆ Inspection

Regularly inspect your Erlenmeyer flasks for cracks, chips, or other signs of damage. Discard any flasks that are damaged or no longer suitable for use.

◆ Calibration

For Erlenmeyer flasks used in quantitative measurements, such as volumetric flasks, ensure that they are calibrated regularly to ensure accuracy. This involves comparing the flask's markings to a standard measurement and adjusting as necessary.

The Erlenmeyer flask is a vital tool in chemistry and biology laboratories, thanks to its distinctive conical shape and versatility. Its design features, including increased stability, improved heat distribution, reduced splashing, and easy handling, make it an ideal vessel for various experiments. Whether you're mixing and reacting chemicals, heating reactions, performing titrations, or culturing cells and microorganisms, the Erlenmeyer flask is an essential piece of equipment that should be part of every laboratory's arsenal.

Proper maintenance and care of the Erlenmeyer flask are crucial to ensure its longevity and accuracy in experimental results. Regular cleaning, storage in a clean and dry environment, inspection for damage, and calibration for quantitative measurements are all essential steps in maintaining your Erlenmeyer flasks. By taking proper care of your flasks, you can ensure that they will continue to serve you well for years to come.