Separatory Funnel Stopcock
2.Big mouth Funnel：90mm/170mm/210mm/260mm
3.Wide-mouthed funnel: 150mm/200mm/250mm/300mm
***Price List for whole above, inquire us to get
Description
Technical Parameters
The separatory funnel stopcock, also known as the glass piston of the separating funnel, is a crucial component of glass instruments in chemical experiments. The separating funnel, as a laboratory instrument widely used in chemistry, biology, medicine and other fields, is mainly used for separating and extracting two immiscible liquids. The glass piston is cleverly installed at the bottom of the separating funnel, and by rotating the piston, the outflow of liquid can be controlled, achieving precise liquid separation and transfer. This design not only improves the accuracy and efficiency of the experiment, but also ensures the safety and controllability of the experimental process.
Parameter
Triangular Funnel
Big mouth Funnel
Wide-mouthed funnel
Structure and Material
1. Structural characteristics
The glass piston of a separatory funnel stopcock is usually composed of a piston body, a piston rod, a sealing ring, and other parts. The piston body is the main part of the piston, usually cylindrical in shape, with threads or grooves inside to match the bottom of the separting funel. The piston rod is the part that connects the piston body and the handle, used to rotate the piston to control the flow of liquid. The sealing ring is located between the piston body and the bottom of the separting funel to prevent liquid leakage.
2. Material selection
The material of the separting funel glass piston is usually high temperature resistant and corrosion-resistant materials such as glass or glass ceramics. These materials have excellent chemical and thermal stability, and can withstand high temperatures, high pressures, and corrosive liquids in experiments, ensuring the accuracy and safety of the experiments.
Working principle and usage method
1. Working principle
The working principle of the separting funel glass piston is based on the pressure difference of the liquid and the sealing performance of the piston. When the piston is closed, the liquid inside the separting funel is sealed in the container and cannot flow out. When liquid needs to be released, rotate the piston handle to separate the piston body from the sealing surface at the bottom of the separting funel, and the liquid flows out under the action of gravity. By adjusting the opening degree of the piston, the outflow speed and flow rate of the liquid can be controlled.
2. Detailed explanation of usage methods
It is crucial to conduct a thorough inspection before officially using the separting funel. Firstly, it is necessary to confirm that the separting funel itself is not cracked or damaged to ensure that it can withstand the pressure of the liquid during use without leakage. Secondly, the integrity of the glass piston also needs to be checked, and the piston should be able to rotate smoothly without any signs of leakage. In addition, as a key component to prevent liquid leakage, the sealing ring must be ensured to be intact and correctly installed in the corresponding position of the separting funel.
After confirming that all components are in good condition, the next step is to pour the liquid that needs to be separated into the separting funel. During this process, it is important to note that the amount of liquid should not exceed the upper capacity mark of the separating funnel to prevent liquid overflow and contamination of the experimental environment or deviation of experimental results. At the same time, the liquid should be poured slowly and evenly to avoid generating too many bubbles that may affect the subsequent layering effect.
In order to promote sufficient mixing and extraction reaction between two liquids, it is necessary to gently oscillate the separating funnel. During oscillation, the mouth of the separting funel should be kept tightly closed to prevent liquid from splashing out. At the same time, the intensity and frequency of oscillation should be moderate, ensuring sufficient contact between the two liquids while avoiding excessive oscillation that may cause liquid splashing or damage to the separating funnel.
After the oscillation is completed, let the separting funel stand for a period of time, allowing the two liquids to naturally stratify under the action of gravity. The settling time depends on the properties of the liquid and the degree of extraction reaction, usually taking several minutes to several hours. During this period, any form of disturbance to the separting funel should be avoided to avoid affecting the stratification effect.
After the two liquids have completely separated, the piston of the separting funel can be opened to release the lower liquid. During the liquid discharge process, special attention should be paid to controlling the opening degree of the piston to avoid excessive splashing or loss of liquid. At the same time, appropriate receiving containers should be used to collect the lower liquid and ensure good sealing to prevent liquid evaporation or contamination.
After use, timely cleaning of the separatory funnel stopcock and glass piston is the key to maintaining their good performance and extending their service life. When cleaning, appropriate cleaning agents should be used and thoroughly rinsed to ensure that there are no residues that may affect the next experiment. In addition, the wear of the separting funel and glass piston should be regularly checked, and if necessary, new components should be replaced in a timely manner to ensure the accuracy and safety of the experiment.
Maintenance and upkeep
1. Cleaning and disinfection
After use, the separting funel and glass piston should be cleaned promptly. When cleaning, gently scrub with warm water and detergent, and then rinse with distilled water. For residues that are difficult to clean, appropriate solvents can be used for cleaning. After cleaning, the separting funel and glass piston should be air dried or blown dry with a hair dryer to avoid residual moisture causing corrosion or rust.
In addition, for experimental instruments that require disinfection, methods such as high-temperature and high-pressure steam sterilization or ultraviolet disinfection can be used for disinfection treatment.
2. Inspection and maintenance
Regularly checking the integrity of the separting funel and glass piston is an important step in ensuring experimental accuracy. The inspection includes checking whether the piston is flexible, whether the sealing ring is intact, and whether the separting funel has cracks or wear. If problems such as piston jamming, aging of sealing rings, or cracks in the separting funel are found, they should be repaired or replaced in a timely manner.
During maintenance, the piston, sealing ring, or the entire separting funel can be replaced according to the specific situation. For irreparable damage, new instruments should be purchased promptly for replacement.
Shopping Guide and Brand Recommendations
1. Shopping Guide
When selecting a glass piston for a separting funel, the following factors should be considered:
Brand and reputation:
Choose well-known brands and reputable suppliers to ensure the quality and after-sales service of the instruments.
01
Specifications and models:
Select appropriate specifications and models according to experimental requirements to ensure that the instrument can meet the experimental requirements.
02
Material and Craftsmanship:
Choose instruments that are resistant to high temperatures, corrosion, and have excellent craftsmanship to ensure the accuracy and safety of experiments.
03
Price and cost-effectiveness:
On the premise of ensuring quality, choose instruments with reasonable prices and high cost-effectiveness to reduce experimental costs.
04
2. Development prospects
In the future, the development of separating funnel glass pistons will present the following trends:
(1) Intelligence and automation:
With the development of intelligent technology, future separation funnel glass pistons may be equipped with intelligent control systems to achieve automated operations and data recording functions, improving the accuracy and efficiency of experiments.
(2) Multifunctionality and integration:
In order to meet the needs of different experiments, future separation funnel glass pistons may develop towards multifunctionality and integration, such as being equipped with multiple specifications of pistons and sealing rings to adapt to the separation and extraction operations of different liquids.
(3) Greening and Environmental Protection:
With the increasing awareness of environmental protection, future glass pistons for seprating funels may be manufactured using more environmentally friendly materials and processes to reduce pollution and damage to the environment.
The separatory funnel stopcock, as one of the important instruments in chemical experiments, plays a crucial role in liquid separation and extraction operations. By understanding its structure, working principle, usage method, and maintenance and upkeep, we can better use and maintain this instrument, ensuring the accuracy and safety of experiments. At the same time, with the advancement of technology and the continuous development of experimental techniques, future seprating funel glass pistons will become more intelligent, multifunctional, and environmentally friendly, providing more convenient and efficient tools for scientific research and experimental work.
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