TDS = EC × 0.64
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EC (Electrical Conductivity) to TDS (Total Dissolved Solids) conversion is a method to estimate the concentration of dissolved substances in water by measuring its electrical conductivity. The conversion factor of 0.64 is commonly used for natural waters.
The calculator uses the simple conversion formula:
Where:
Explanation: This formula provides a quick estimation of total dissolved solids based on the electrical conductivity measurement of water.
Details: TDS measurement is important for water quality assessment, agricultural irrigation, aquarium maintenance, and drinking water treatment. It helps determine the purity and suitability of water for various applications.
Tips: Enter EC value in µS/cm. The value must be greater than 0. The calculator will automatically compute the corresponding TDS value in ppm.
Q1: Why use 0.64 as the conversion factor?
A: The 0.64 factor is a commonly accepted average conversion factor for natural waters, though the actual factor can vary slightly depending on the specific ionic composition of the water.
Q2: What are typical TDS levels for drinking water?
A: TDS levels below 500 ppm are generally acceptable for drinking water, with ideal levels between 50-150 ppm. Levels above 1000 ppm may affect taste and indicate potential contamination.
Q3: How does temperature affect EC measurements?
A: Electrical conductivity increases with temperature. Most modern EC meters automatically compensate for temperature (usually to 25°C) to provide standardized readings.
Q4: Are there different conversion factors for different water types?
A: Yes, conversion factors can range from 0.55 to 0.9 depending on the specific ionic composition. Seawater typically uses a factor around 0.55, while some mineral waters may use factors up to 0.9.
Q5: Can I use this calculator for hydroponics or aquarium water?
A: Yes, this calculator is suitable for estimating TDS in hydroponic solutions and aquarium water, though specific applications may require additional water quality parameters for complete analysis.