EC vs TDS Explained: Why Two Meters Show Different ppm Readings

Why do two TDS meters show 500 ppm and 700 ppm for the same water sample? The difference may come from the EC-to-TDS conversion factor. In this video, SciSpectrum explains electrical conductivity (EC) and total dissolved solids (TDS) in simple English, with worked examples and practical checks. You will learn: • What EC measures and how conductivity-based meters estimate TDS • How conversion factors such as 0.5 and 0.7 change the displayed result • How to convert mS/cm to µS/cm before calculating TDS • Why temperature settings, calibration and sample handling matter • What to check before choosing an EC/TDS meter The examples are illustrative calculations, not product test results. Use the conversion factor and measurement method required by your procedure and the exact instrument manual. Need help selecting an EC or TDS meter? Share your sample type, expected conductivity range and application requirements with SciSpectrum Lab Essentials, a reseller of laboratory instruments. Website: https://scispectrum.in Email: info@scispectrum.in Subscribe for more practical laboratory instrument guides. #ECvsTDS #ConductivityMeter #TDSMeter