Dropping Funnel, 250mL - Squibb, Graduated - With 19/26 Plastic Stopper & Glass Key Stopcock - Borosilicate Glass Chemical_Lens Cleaning Square-topped wooden screw simple-machine model

Square-topped wooden screw simple-machine model with a leverage block

3 glass holds 100mL with 0

a left-side start/stop lever

Pairs 50mm of aperture with a 100mm focal length on a plano-convex glass lens

Zinc-and-carbon electrochemistry demonstration cell with electrolyte

Dropping Funnel, 250mL - Squibb, Graduated - With 19/26 Plastic Stopper & Glass Key Stopcock - Borosilicate Glass Chemical_Lens Cleaning Square-topped wooden screw simple-machine modelSQUIBB 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 &