Separating Funnel Borosilicate 3.3 Glass with PTFE Key - OMSONS

A separating funnel, also known as a separation funnel, is a piece of laboratory glassware used to separate immiscible liquids, meaning liquids that do not mix, like oil and water. These funnels are particularly useful in liquid-liquid extractions, where a mixture is separated into two distinct liquid phases based on density.

Immiscible Liquids: The funnel is used to hold two liquids that don't mix together, like oil and water.

Density Difference: The liquids separate into layers based on their densities, with the denser liquid settling at the bottom.

Controlled Drainage: A stopcock (a valve at the bottom) allows the user to drain the lower layer, while the upper layer remains in the funnel.

Complete Separation: By carefully opening and closing the stopcock, the two liquids can be separated cleanly.

Key Components: 

• Funnel Body: The main container, often pear-shaped or conical, that holds the liquids.
• Stopcock: A valve at the bottom to control the flow of liquid out of the funnel.
• PTFE Stopcock: is a type of valve, made from polytetrafluoroethylene (PTFE), also known as Teflon. PTFE provides excellent chemical resistance and durability, making it suitable for handling a wide range of reagents and liquids.
• Stopper: A plug at the top to seal the funnel during shaking and mixing.
• Materials: Separating funnels are typically made of borosilicate glass for its chemical resistance and ability to withstand temperature changes. They can also be made of plastic (like polypropylene or Teflon) for lighter weight and impact resistance.
• Stopper Material Properties: PP is a thermoplastic polymer known for its strength, flexibility, and resistance to many chemicals, acids, and bases. It's also lightweight and can withstand high temperatures, making it suitable for various applications.
• Graduations: A graduated separating funnel is used to accurately measure and dispense liquids during liquid-liquid extractions and other separation processes in the lab. The graduations (markings) on the funnel allow for precise volume measurements, ensuring accuracy and reproducibility in experimental procedures.
• Socket Functionality: The ground glass joint enables the funnel to be sealed during use, preventing evaporation or leakage of liquids during separation or other chemical processes.
• Socket Compatibility: This standardization ensures that a 24/29 joint on a separating funnel will fit with a 24/29 joint on a stopper, condenser, or other glassware.The first number, 24, indicates the diameter of the larger end of the ground glass joint in millimeters. The second number, 29, indicates the length of the ground glass joint in millimeters.
• Drip Tip: The drip tip provides a narrow opening for liquids to exit the funnel, allowing for a more controlled and directed flow. This prevents liquids from splashing or dripping uncontrollably, which can be problematic in sensitive experiments.
• Drip Tip and Cone: Allows for the controlled addition of liquids to another piece of glassware, like a flask, via a ground glass joint. This setup enables a slow, dropwise addition of reagents, which is crucial for reactions that are sensitive to rapid addition. In some setups, like distillation, a drip tip can help prevent the backflow of vapors into the receiving flask. This is important to ensure that the collected liquid is not contaminated by the vapor phase.

Specification:

• Funnel Body: Conical
• Stopcock: PTFE Key Stopcock
• Stopper: PP (polypropylene) plastic stopper
• Materials: Borosilicate glass
• Graduated: No
• Socket: 19/26 or 24/29 (Select with the drop-down menu)
• Drip Tip: Drip tip
• Brand: OMSONS