Funnel Separating - Squibb, cap. 100ml, socket size 19/26, borosilicate glass, with interchangeable plastic stopper and PTFE key stopcock, Un-Gradauted-EIS-CH0479B offers a thoughtfully designed, durable resource for hands-on learning. Squibb Separatory Funnel, made from quality borosilicate glass 100 ml capacity, ungraduated. PTFE Stopcock Interchangeable Plastic Stopper, Socket Size 19/26 10" long, 3" wide 100ml capacity Pear Shaped Separating Funnel, made of high quality borosilicate glass. Funnel has a 19/26 size socket and includes an interchangeable plastic stopper. PTFE key stopcock. Ungraduated. This funnel measures approximately 10" long, and 3" wide. Neck diameter measures approximate 0.7". Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point -515°C | Annealing Point 565°C | Softening Point 820°C.