Water • Ro Microsoft Excel (.xlsx)
RO Scaling & Saturation Indices
Langelier, Ryznar and Stiff & Davis indices for RO concentrate scaling tendency.
Download Excel Workbook (.xlsx)
Version 0.1
What this workbook is
A real, downloadable Microsoft Excel workbook — not a rendered demo. Every sheet is built around a single engineering method: inputs in one place, calculated results and a PASS / WARN / FAIL check sheet, with the method, sources and assumptions recorded next to the numbers. Open it in Excel, Sheets or LibreOffice, change the inputs, and the workbook recalculates.
- Light cells are user-entered inputs on the Inputs sheet.
- Dark cells are calculated automatically and are not editable.
- The method and sources for every calculation are listed below and inside the workbook.
What you enter
- ✓Concentrate TDS
- ✓Temperature
- ✓Calcium
- ✓Alkalinity
- ✓pH
What it calculates
- ✓LSI
- ✓RSI
- ✓S&DSI
- ✓Tendency classification
Method
ASTM D3739-type saturation indices; Stiff & Davis for TDS > 10,000 mg/L
Sources
- [1] EngiMetric scaling-risk / saturationIndices engines
Inside the workbook
CoverTitle, scope and revision block
SummaryCore inputs and headline results
InputsYour project values (light cells)
CalculationsStep-by-step working sheet (dark cells)
OutputsReadback of results for reporting
ChecksPASS / WARN / FAIL against stated limits
ReferenceSources for each calculation
Notes & AssumptionsScope, exclusions and stated limits