A Separating Funnel is a type of laboratory glassware used to transfer a mixture of liquids from one container to another by using gravity and a stopper to separate the layers of the mixture.

A PTFE Stopcock is a type of stopcock valve made of polytetrafluoroethylene (PTFE), a material known for its chemical resistance, non-stick properties, and low friction. The valve consists of a cylindrical body with an opening that can be opened or closed by turning a knob or lever, allowing liquids to flow through or stopping the flow. PTFE stopcocks are commonly used in laboratory settings due to their chemical resistance and ease of use.