7231-59 PTFE Separator Funnel with Locking Stopper - 250mL Squibb Funnel with 1:5 PTFE Plug for Chemical Lab, Liquid Extraction & Organic Chemistry Experiments

European style funnel with new leak-tight, locking stopper that will not fall out during shaking or transportation. Outer ground joint at top is a Rodaviss joint. Stopper can be secured in top joint via cap and O-ring for a positive, leak-tight seal; no worry of fallout. Funnel body supplied with stopcock plug only. Complete item supplied with plug, stopper, cap and O-ring.