Dropping Funnel, 250mL - Squibb, Graduated - With 19/26 Plastic Stopper & Glass Key Stopcock - Borosilicate Glass Chemical_Lens Cleaning while the pair-form allows attraction-repulsion

while the pair-form allows attraction-repulsion comparisons in a single setup

3 glass features 29/32 cone with flat bottom for sealing ground joint vessels and chemistry apparatus

packaged in twelves for classrooms that prefer plastic over glass at student stations

a left-side start/stop lever

Dropping Funnel, 250mL - Squibb, Graduated - With 19/26 Plastic Stopper & Glass Key Stopcock - Borosilicate Glass Chemical_Lens Cleaning while the pair-form allows attraction-repulsionSQUIBB Squibb style graduated dropping separatory funnel with 250ml capacity TRANSPARENT & DURABLE Made of high quality Borosilicate 3. 3 glass Transparency allows for high visibility FOR SEPARATION Used to transfer liquids Using the stopcock allows fluids, including reagents, to dispense slowly (drop wise) STOPPER & STOPCOCK Fitted with an interchangeable 19 26 plastic stopper and glass key stopcock GREAT FOR PROFESSIONAL LABORATORIES, CLASSROOMS &