Difference Between Oven Dry Method and Pycnometer Method In soil mechanics and geotechnical engineering , different laboratory methods are used to determine the water content and other properties of soil. Two commonly used methods are the Oven Dry Method and the Pycnometer Method . Both methods are used in soil testing laboratories, but they differ in their procedure, equipment, and accuracy. 1. Oven Dry Method The Oven Dry Method is the most common method used to determine the water (moisture) content of soil . In this method, a wet soil sample is dried in an oven at a temperature of 105°C – 110°C until all the moisture evaporates. Principle Water present in the soil evaporates when heated in an oven. The difference between the wet weight and dry weight gives the amount of water in the soil. Uses Determining moisture content of soil Soil compaction tests Foundation engineering studies 2. Pycnometer Method The...
TDS Meter – Definition, Working Principle, Uses and Procedure A TDS Meter is an electronic device used to measure the Total Dissolved Solids (TDS) in water. TDS represents the amount of dissolved substances such as minerals, salts, metals, and organic matter present in water. TDS is usually measured in ppm (parts per million) or mg/L (milligrams per liter) . It is an important parameter used to determine the quality of drinking water and wastewater. What is TDS? Total Dissolved Solids (TDS) refers to the total concentration of dissolved substances present in water. These substances include: Calcium Magnesium Sodium Potassium Chlorides Sulfates Bicarbonates High TDS levels may affect the taste, hardness, and quality of water . Working Principle of TDS Meter A TDS meter works on the principle of electrical conductivity . Dissolved solids in water increase its ability to conduct electricity. The meter measu...