Volumetric Flask (20ml, Clear)
Capacity : 20ml
Material : Borosilicate glass
Net Weight : 25g
Base diameter: 2.2 cm.
Bottle mouth height: 10 cm
Inner diameter : 1.0 cm
Outer diameter : 3.604 cm
Height (including plug): 11.5 cm
made of thick material
acid and alkali resistant
Laser Calibration Scale
precise measurement
tight seal prevents leaks

It is a special quality glass.