It ain't heavy, it's my process brother. Density is an important parameter to measure, monitor, or control in many processes. Density is also known as or related to concentration, consistency, degrees brix, % water and how heavy this bucket of stuff is.
Application Note: Sludge Density Analyzer - knowing the sludge density or total percent solids is critical in a water or wastewater treatment facility. The Application Note describes an excellent on-line real-time solution.