Shading Glass and Liquid - Arnold for Katana

Below are the material settings used to accurately shade the glass and water.

Standard Surface: Glass

Set the Base Weight to 0 and increase the Specular Weight to 1. Change the Specular IOR to that of glass (1.5). Increase the Transmission Weight to 1.

Transmission

Lowering the Transmission Weight value attenuates the amount of light that passes through the volume of the glass (distance-based coloring). By default, Transmission Color is white, which means no distance-based tint. Try lowering it from full white.

Transmission Color: Gray	Transmission Color: White

Standard Surface: Water

Repeat the settings used for the glass material. However, make sure that the Index of Refraction is set to that of water 1.33.

Standard Surface: Milky liquid

To create a milky liquid, it helps to add small amounts of sub-surface scattering. Additionally, to make the liquid appear more vibrant, you could experiment by adding a small amount of Emission Weight to it.

SSS Weight: 0.1	SSS Weight: 0.1. Emission 0.1