Salary. The Bureau of Labor Statistics reports that marketing managers in the United States earned an average annual wage of $126,190 as of May 2011. The median wage, or midway point between the lowest and highest salary, was $116,010 per year.
What is TDS. TDS is the total of all dissolved solid matter such as minerals, metals, salts and. contaminants in the water. B. How TDS is Determined. TDS is most often determined in pool and spa water by using a conductivity meter. These. electronic meters measure the waters' ability to conduct an electric current.
4 Drinking Water Total Dissolved Solids The total dissolved solids test is a measure of the amount of dissolved and suspended material in the water. âMineral waterâ typically has a high total dissolved solids level. The maximum recommended level for total dissolved solids is 500 milligrams per liter (mg/1).