What is a scott volumetric apparatus (scott volumeter) used for?

A scott volumeter is used to measure the bulk density of powder featuring free-flowing properties.

AS-200 Scott Volumeter and Bulk Density Tester is a powder testing equipment that determines bulk density of powders according to

- International Standard ISO 3923 - 2 Metallic powders - Determination of apparent density - Part 2: Scott volumeter method. 
- USP Chapter 616 Bulk Density and Tapped Density of Powders Method II-Measurement in a Volumeter 
- ASTM B 329 Standard Test Method for Apparent Density of Metal Powders and Compounds Using the Scott Volumeter.

It is used to test the bulk density of free-flowing powders such as metallic powders, refractory metals,compounds, paint,pigment, etc.