on two surfaces. This treatment enhances the optical refraction principle such that, without liquid, one can clearly see the green color on the surface. Conversely, with fluid in the liquid level meter, the refractive index of the glass matches that of the liquid, and the green color does not reflect, allowing the viewer to see white instead.
Applications
Green Plain Gauge Glass is widely used in several industries like petroleum, chemical, metllurgical, electric power, food, and medicine sector