The StonyLab Conical Separatory Funnel with Plastic Stopper and PTFE Stopcock has a capacity of 1000ml and is made of borosilicate glass. This high-quality funnel is designed for separating organic compounds in a laboratory setting. It features a conical shape for easy pouring and a plastic stopper and PTFE stopcock for secure closure. With its durable construction and precise design, this separatory funnel is a reliable tool for various scientific experiments and research studies.