1. What Is TDS Calculation From Conductivity?

Total Dissolved Solids (TDS) represents the total concentration of dissolved substances in water. Conductivity measurements can be used to estimate TDS through a conversion factor, typically ranging between 0.5-0.7.

2. How Does The Calculator Work?

The calculator uses the TDS formula:

Where:

• \( Conductivity \) — Electrical conductivity in microsiemens per centimeter (μS/cm)
• \( Factor \) — Conversion factor (typically 0.5-0.7, unitless)
• \( TDS \) — Total dissolved solids in parts per million (ppm)

Explanation: The conversion factor accounts for the relationship between electrical conductivity and dissolved ion concentration in water samples.

3. Importance Of TDS Calculation

Details: TDS measurement is important for assessing water quality, determining suitability for drinking, irrigation, industrial processes, and monitoring environmental water conditions.

4. Using The Calculator

Tips: Enter conductivity in μS/cm and select an appropriate conversion factor (typically 0.64 for most natural waters). Both values must be valid (conductivity > 0, factor between 0.5-0.7).

5. Frequently Asked Questions (FAQ)

Q1: Why use a conversion factor for TDS calculation?
A: The conversion factor accounts for the varying conductivity contributions of different dissolved ions in water.

Q2: What is a typical conversion factor value?
A: Most natural waters use a factor of 0.64, though this can vary from 0.5 to 0.7 depending on water composition.

Q3: When should conductivity be measured?
A: Conductivity should be measured in representative water samples at stable temperature conditions (usually 25°C).

Q4: Are there limitations to this calculation method?
A: This method provides an estimate. For precise TDS measurement, gravimetric analysis is required, especially for waters with unusual ion compositions.

Q5: What are typical TDS values for different water types?
A: Distilled water: 0-10 ppm, Freshwater: 50-250 ppm, Brackish water: 500-15,000 ppm, Seawater: ~35,000 ppm.