Which of the following best describes Total Solids in a sample?

Total Solids in a sample is best described as both organic and inorganic materials. This measurement includes the combined mass of all solid matter present in a sample, regardless of its nature. Total Solids encompass a wide range of components, including suspended solids, which might consist of particulate organic matter like plant debris and microorganisms, as well as inorganic materials such as sand, silt, and metals.

By analyzing Total Solids, one can gain insights into the overall composition of wastewater, which is critical for understanding treatment processes and assessing the quality of effluent discharge. This measure is important in various applications, including regulatory compliance and operational efficiency in wastewater treatment facilities. Other options that focus solely on organic, inorganic, or dissolved materials do not capture the full spectrum of solid constituents present in a sample, therefore missing the comprehensive nature of Total Solids measurement.