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.
Step 5. All water has dissolved mineral solids in it at various percentages. Lime, calcium, magnesium are a few common minerals in our water that come to mind. Hard water mineral deposits will form on the inside of your toilet tank (and toilet bowl) given enough time and a high enough mineral level in the water.