A dropping funnel, also known as an addition funnel, is a specific type of laboratory glassware designed for the precise transfer of liquids. Equipped with a stopcock, these funnels enable precise control over the liquid flow. They are particularly valuable for gradually introducing reagents into a reaction, commonly referred to as drop-wise addition. This method is preferred when rapid reagent addition could lead to unwanted side reactions or overly vigorous reactions. The dropping funnel typically includes a male 24/40 ground glass joint at the top and a female 24/40 joint at the bottom, facilitating a secure fit onto a round bottom flask. This item is used but is in great condition.
