Water Quality & Chemistry Calculators
Equilibrium chemistry, saturation indices (LSI, RSI), flow/mass conversion, and engineering unit conversion.
Chemical & Process Live Tool
Engineering Unit & Water Quality Converter
Convert flow rates and TDS concentration units (mg/L ↔ ppm) using the Site canonical unit engines (m³/day internal).
Canonical flow unit = m³/day · 1 mg/L ≈ 1 ppm (dilute aqueous) Chemical & Process Live Tool
Volumetric → Mass Flow Converter
Convert volumetric flow to mass flow (and reverse) using fluid density, with common water/TDS basis.
ṁ = ρ × Q · Q = ṁ / ρ Water & Desalination Live Tool
Water Quality Saturation Indices (LSI & RSI)
Evaluate calcium carbonate stability of a water with the Langelier Saturation Index (LSI) and Ryznar Stability Index (RSI) from pH, temperature, TDS, calcium, and alkalinity.
pH_s = 9.3 + A + B − C − D · LSI = pH − pH_s · RSI = 2·pH_s − pH