Measuring the total dissolved solids, or TDS, gauges the strength of a hydroponic nutrient solution and is an unparalleled method of determining water quality. When growing hydro make sure to take all ...

This time, my focus is on a cheap TDS meter. TDS meters are small hand-held devices used to indicate the Total Dissolved Solids in a solution, usually water. Since dissolved ionized solids (such as ...

Total dissolved solids (TDS) is a measure of additive concentration and contaminants in coolant. TDS in excess of 3 percent may promote water-pump and radiator failures. What would you guess is the ...