Class A Volumetric Flask with 14/23 Polypropylene Stopper and Calibration Certificate, 200mL, White Graduations, Borosilicate Glass Chemical_Lithium Chloride and follicular stages from primordial

and follicular stages from primordial through mature corpus luteum for reproductive anatomy and histology teaching

supplying spares so optics demonstrations of reflection and refraction continue once the original burns out

Two 25mm lenses folding out together for 7x combined magnification in a pocket housing

For measuring the gravitational constant through free-fall drops

Class A Volumetric Flask with 14/23 Polypropylene Stopper and Calibration Certificate, 200mL, White Graduations, Borosilicate Glass Chemical_Lithium Chloride and follicular stages from primordialClass A volumetric flask in borosilicate 3. 3 glass holds 200mL with 14 23 polypropylene stopper for precision volumetric measurement.