Conical Flask Erlenmeyer
1) Narrow-mouth Bottle: 50ml~10000ml;
2) Big B Bottle: 50ml~3000ml;
3) Horn Mouth: 50ml~5000ml;
4) Wide-mouth Bottle: 50ml/100ml/250ml/500ml/1000ml;
5) Conical Flask With Cover: 50ml~1000ml;
6) Screw Conical Flask:
a. Black Lid (General Sets): 50ml~1000ml
b. Orange Lid (Thickening Type): 250ml~5000ml;
2. Single and Multi-mouth Round Bottom Flask:
1) Single Mouth Round Bottom Flask: 50ml~10000ml;
2) Inclined Three-mouth Flask: 100ml~10000ml;
3) Inclined Four-mouth Flask: 250ml~20000ml;
4) Straight Three-mouth Flask: 100ml~10000ml;
5) Straight Four-mouth Flask: 250ml~10000ml.
***Price List for whole above, inquire us to get
Description
Technical Parameters
Conical Flask Erlenmeyer, also known as Erlenmeyer Flask, is an extremely common and important glass instrument in chemical laboratories. This instrument was invented by German chemist Richard Erlenmeyer in 1861 and is therefore also known as the Erlenmeyer bottle. The conical, with its unique conical design, is widely used in titration experiments, ordinary experiments, gas production, and as a reaction vessel in various chemical experiments. The conical is made of hard glass and has a triangular longitudinal section with a small mouth and a large bottom. It has a flat bottomed conical shape, wider at the bottom and narrower at the top, with a cylindrical neck and a wider opening above. This design allows the conical to oscillate during the titration process, allowing the reaction to proceed fully and preventing the liquid from splashing out easily. In addition, its long neck is easy to add a stopper, which can also slow down the loss during heating and avoid the overflow of chemicals; The flat and wide bottom can accommodate more solution, making it easier for glass rods to stir and conical bottles to be placed flat on the table.
Specifications
Titration experiment
Application of conical flask in titration experiment
In titration experiments, conical flask erlenmeyers are often used to prepare and mix the solution to be tested and the titrant. For example, in analytical chemistry experiments, the solution to be tested can be placed in a conical flask and an appropriate amount of indicator can be added.
The titrant in the burette is added drop by drop to the solution to be tested in the conical flask. With the addition of the titrant, the color of the solution changes because the titrant reacts chemically with the components in the solution to be tested.
The titration process needs to carefully control the rate of addition of titrant and slow down the rate near the end point in order to accurately judge the end point of titration.
The end point of titration is usually determined by observing the change in color of the solution. In the conical flask, with the addition of titrant, the color of the solution will gradually change until it reaches a stable point of color change, that is, the end point.
The accuracy of end point judgment is very important for the accuracy of titration results. Therefore, it is necessary to carefully observe the change in the color of the solution during the titration process, and record the consumption of titrant in time.
During the titration process, it is necessary to accurately record the consumption of titrant. This consumption can be used to calculate the composition content of the solution under test.
By comparing the consumption of the titrant with the known concentration, the concentration or mass of the component in the solution under test can be calculated.
Precautions in titration experiment
Conical flask cleaning and drying
Before using the conical flask, make sure it has been cleaned and dried. This helps to avoid the influence of impurities on the experimental results.
Accurate addition of titrant
During the titration process, it is necessary to ensure the accurate addition of titrant. This can be achieved by using a precise burette and controlling the titration rate.
Accuracy of end point judgment
The accuracy of end point judgment is very important for the accuracy of titration results. Therefore, it is necessary to carefully observe the change in the color of the solution during the titration process, and record the consumption of titrant in time. At the same time, other auxiliary means can also be used to improve the accuracy of the end point judgment, such as the use of potentiometric titrator.
Experimental safety
When performing titration experiments, it is necessary to pay attention to experimental safety. For example, avoid using toxic or flammable reagents, wear appropriate protective equipment, and keep the laboratory ventilated.
Classification of materials
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Glass material
The most common kind of glass bottle, it has excellent chemical stability and thermal stability, can withstand high temperatures and corrosion of a variety of chemical substances. It has high transparency and is easy to observe the reaction during the experiment. At the same time, the glass material is also easy to clean and disinfect, suitable for a variety of experimental environments.
Plastic material
Plastic material has the advantages of light weight, not easy to break, and the price is relatively low. Polytetrafluoroethylene (PFA, FEP, etc.) and polypropylene (PP) in plastic materials are common choices. These plastics have excellent corrosion resistance and high temperature resistance, which can meet the needs of some specific experiments. However, compared with glass materials, plastic materials may be slightly less thermal stable and cannot withstand excessive temperatures.
Other materials
In addition to glass and plastic, the bottle can also be made of other materials such as ceramic and polycarbonate. These materials also have some applications in the laboratory, but they are relatively rare. Ceramic material has the characteristics of high temperature resistance and corrosion resistance, but the fragility is high; Polycarbonate material has better impact resistance and corrosion resistance, suitable for some special experiments.
When selecting materials, it is necessary to consider the specific needs and conditions of the experiment. For example, for experiments that need to withstand high temperatures or highly corrosive chemicals, glass or high temperature and corrosion resistant plastic materials should be selected; For containers that need light weight and are not easy to break, plastic materials can be selected. At the same time, it is also necessary to pay attention to the safety and environmental protection of the material to ensure that the experiment will not cause harm to the environment and human health.
Background & History
Richard August Carl Emil Erlenmeyer was born in 1825 in the picturesque town of Wiesbaden, Germany. He came from a family full of academic atmosphere, and his father was a highly respected evangelical pastor. From a young age, influenced by his family, he demonstrated a thirst for knowledge and a strong interest in scientific exploration. Although he had a dream of becoming a doctor when he was young, believing that it would be the best way for him to save lives and serve humanity, the turning point of fate quietly occurred at the moment he stepped into the threshold of Giessen University.
At Giessen University, an unexpected encounter completely changed his career trajectory. The profound and captivating chemistry course of the renowned chemist Justus von Liebig shone like a beam of light, penetrating Orenburg's original medical dream and illuminating his infinite curiosity and love for the world of chemistry. Professor Li Bixi's rigorous scientific attitude, innovative experimental spirit, and profound philosophy behind his knowledge of chemistry deeply touched the heartstrings of Erlenmeyer, making him resolutely give up the path of medicine and devote himself wholeheartedly to the vast world of chemical research.
However, the road to the temple of science is never smooth sailing. Li Bixi Laboratory is renowned for its outstanding scientific research achievements and strict selection criteria, and the fierce competition can be imagined. Oren Mayer encountered numerous difficulties and challenges when he first entered the laboratory, but with his unwavering perseverance and infinite love for the chemical industry, he overcame them time and time again, constantly improving his research abilities. In the end, after unremitting efforts, he successfully found his place in Professor Robert Wilhelm Bunsen's laboratory.
Professor Ben Sheng, as an outstanding figure in the chemical industry at that time, was renowned for his invention of the Ben Sheng lamp and contributions to spectral analysis. In his own laboratory, Oren Mayer not only gained a broader research platform and abundant resource support, but also met many like-minded scientists, including Dr. Friedrich August Kekul é, who later became a giant in the field of organic chemistry. The exchange and cooperation with these outstanding scientists greatly broadened Oren Mayer's academic horizons and laid a solid foundation for his future research achievements.
During his valuable experience in the laboratory, Oren Mayer not only completed several important chemical research works, but also invented the conical, a laboratory vessel with far-reaching influence. This innovative design not only solved the problems of easy rupture and uneven heating of heating containers in chemical experiments at that time, but also greatly improved the safety and efficiency of experiments, becoming an indispensable and important tool in chemical laboratories. The invention of the conical not only reflects Oren Mayer's profound chemical knowledge and keen innovative thinking, but also demonstrates his persistent pursuit and selfless dedication to the chemical industry.
Invention process
The process of Oren Mayer inventing the conical flask erlenmeyer is a vivid portrayal of his relentless pursuit of scientific exploration and technological innovation. The birth of this invention deeply reflects his keen insight and in-depth thinking on the stability of glass instruments in high-temperature environments in chemical experiments.
In the mid-19th century, the Bunsen burner became a sought after heating tool among chemists due to its outstanding flame temperature in the halls of science. However, with the continuous advancement of experimental technology, scientists have gradually realized that traditional glass instruments are unable to withstand the high temperature of the built-in lamp and are prone to rupture due to local overheating. This not only affects the smooth progress of the experiment, but also poses a potential threat to the safety of the experimenters.
Faced with this challenge, Oren Mayer did not retreat, but instead rose to the challenge and began his in-depth research on the stability of glass instruments under high temperature heating. He first noticed that uneven heat distribution was one of the main causes of glass instrument breakage, so he creatively invented asbestos mesh. Asbestos mesh, with its excellent thermal insulation performance and ability to disperse heat, effectively alleviates the local overheating problem of glass instruments at high temperatures, providing strong guarantees for the safety of chemical experiments.
However, Oren Mayer's exploration did not stop here. He was well aware that relying solely on asbestos mesh was not enough to completely solve the stability problem of glass instruments at high temperatures. So he further turned his attention to the design improvement of the heating container. After countless experiments and attempts, he finally designed a new container shape - a conical.
The design of the conical cleverly combines the dual requirements of stability and thermal uniformity. Its conical structure not only increases the stability of the container, making it less prone to tipping during heating, but also effectively slows down the rate of heat loss through a gradually narrowing bottleneck design, allowing heat to be transferred more evenly to the solution. In addition, the flat bottom and wide bottom design of the conical further enhances its thermal stability, allowing it to withstand higher temperatures without easily breaking.
It is these exquisite designs and innovations that make conicals shine in chemical experiments. It has not only become the preferred container for titration experiments, quantitative analysis, reflux heating, gas production, or as a reaction vessel in various experimental scenarios, but also won the favor and praise of scientists for its excellent stability and practicality. Erlenmeyer's invention not only made important contributions to the development of chemical experimental technology, but also provided valuable inspiration and reference for the exploration path of future scientists.
Design Features
The structure of conical flask erlenmeyer not only facilitates easy mixing and swirling of liquids but also minimizes the risk of spills, making it an ideal choice for handling hazardous or volatile substances. Its narrow neck reduces evaporation and contamination, while the wide base allows for efficient heating and cooling. These features have solidified its role as an essential instrument in both educational and professional chemical settings.
As scientific technology advances, the design and functionality of the Erlenmeyer flask continue to evolve, incorporating materials and modifications that enhance durability, precision, and safety. Innovations such as graduated markings for accurate measurements and heat-resistant glass compositions further extend its utility.
Richard Ehrenmeier's legacy as an explorer and innovator remains influential, inspiring future generations of scientists to push the boundaries of discovery. As we honor his contributions, we eagerly anticipate the emergence of new pioneers who will drive forward scientific progress, crafting tools and methodologies that will shape the future of chemical research and technological advancement.
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