2000ml Erlenmeyer Flask ; Narrow Neck, Eisco Labs 3.3 Borosilicate Glass ( Single flask ) Physics_Waves & Oscillation Built-in battery and flip-switch buzzer

Built-in battery and flip-switch buzzer inside a thick acrylic vacuum jar with O-ring seals and removable bottom

Built for complete volumetric range

25-inch aluminum tuning fork features a round stem that grips firmly without damping the vibration

The funnel comes with a borosilicate glass key stopcock and interchangeable plastic stopper

Round convex glass mirror for physics optics experiments in reflection

2000ml Erlenmeyer Flask ; Narrow Neck, Eisco Labs 3.3 Borosilicate Glass ( Single flask ) Physics_Waves & Oscillation Built-in battery and flip-switch buzzerHigh quality, borosilicate glass flask 2000ml Capacity 250 ml Graduations Narrow Neck Eisco Labs Glass Erlenmeyer Narrow Neck Flask 2000ml, borosilicate ( Single flask ) 250 ml Graduations. Flask measures 11" tall and has a base diameter of 7". Inner neck diameter measures 45mm, and outer diameter measures 50mm. Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point 515C Annealing Point 565C Softening Point 820C. Compatible