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TDS = EC × k
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The TDS (Total Dissolved Solids) vs Conductivity calculation estimates the concentration of dissolved solids in water based on its electrical conductivity. This relationship is widely used in water quality assessment and environmental monitoring.
The calculator uses the formula:
Where:
Explanation: The conversion factor k accounts for the type of dissolved ions and their conductivity characteristics. Different water sources may require different k values.
Details: Understanding the relationship between TDS and conductivity is crucial for water quality monitoring, agricultural irrigation management, industrial water treatment, and environmental protection.
Tips: Enter electrical conductivity in μS/cm and select an appropriate conversion factor between 0.5-0.8. For most natural waters, a factor of 0.65 is commonly used.
Q1: What is the typical range for conversion factor k?
A: The conversion factor typically ranges from 0.5 to 0.8, with 0.65 being a common value for many natural waters.
Q2: Why does the conversion factor vary?
A: The factor varies because different dissolved ions have different electrical conductivity characteristics. The type and concentration of ions affect the conversion.
Q3: What are typical TDS levels for different water types?
A: Distilled water: 0-10 ppm, Rainwater: 10-50 ppm, Freshwater: 50-250 ppm, Brackish water: 500-30000 ppm, Seawater: 30000-40000 ppm.
Q4: How accurate is this calculation?
A: The calculation provides a good estimate but may not be precise for waters with unusual ion compositions. Laboratory analysis provides more accurate TDS measurements.
Q5: Can this calculation be used for all water types?
A: While generally applicable, waters with high concentrations of non-conductive dissolved solids or unusual ion ratios may require specific calibration.