🧪 Langelier LSI (0 to +0.5 Target) & Ryznar RSI (6.0-7.0 Neutral Stability Index)

Cooling Water Scaling LSI & RSI Calculator

Predict calcium carbonate (CaCO3) scaling propensity and corrosivity in open cooling loops using the Langelier Saturation Index (LSI = pH - pHs) and Ryznar Stability Index (RSI = 2pHs - pH): calculate saturation pH based on calcium hardness, total alkalinity, temperature, and TDS, optimize acid/polymer feed, and water consulting margins.

1. Project & Operating Inputs

Cooling Tower Sump Systems Treated (Sump Count e.g. 14 Sump Loops)

Recirculating Water pH (pH e.g. 8.4 pH Operating Sump)

Customer Bid Price for Annual Water Chemistry Management ($ / Loop)

Chemical Reagents, Digital Photometers, Water Chemist Field Visits ($)

2. Financial Breakdown & Yield

LANGELIER & RYZNAR INDICES

Turnkey Water Treatment Retainer Profit

Water Chemistry Consulting Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost