Separating Funnel 250ml
A 250ml separating funnel is a borosilicate glass or plastic lab tool with a conical shape, top stopper, and bottom PTFE stopcock, used for separating immiscible liquids (e.g., oil/water) and conducting liquid-liquid extractions based on density.
It is ideal for purifying reaction mixtures, removing solvents, and adding reagents dropwise in organic chemistry, with its size being suitable for moderate-scale, versatile lab work.
Key Uses and Functions
Liquid-Liquid Extraction: Used to separate components of a mixture by distributing them between two immiscible solvent phases, often involving shaking the funnel to increase contact area.
Separation by Density: Denser, heavier liquids settle at the bottom and are removed first via the stopcock, while lighter liquids remain.
Removal of Contaminants: Used to remove impurities, such as washing an organic layer with water to remove polar salts.
Controlled Addition of Reagents: Allows for the slow, dropwise addition of liquids into a reaction flask during distillation or other processes.
Common Applications: Widely used in chemistry labs for organic synthesis, pharmaceutical, and, in some cases, food and beverage analysis.
Important Features
Material: Usually constructed from heat-resistant borosilicate glass or durable, autoclavable plastic.
Stopcock: Typically features a self-lubricating PTFE (Teflon) stopcock that resists chemical corrosion and does not require grease.
Shape: Primarily comes in
Separating Funnel 250ml
Separating Funnel 250ml
-Laboratory glass instrument
