Orenda LSI Calculator.
Built-in. Live Langelier Saturation Index calculation per reading — flagged automatically when a pool drifts out of balance.
How Orenda LSI Calculator fits into PSS.
The Langelier Saturation Index (LSI) is the gold standard for measuring water balance — corrosive vs. scale-forming. PSS computes the LSI live from every visit's chemistry readings, surfaces the value on the visit card, and flags pools that drift outside the safe band.
Three steps. Connected once, then it just runs.
Built so your bookkeeper, office and tech don't have to think about it. Set it up once; it works for you forever.
Read chemistry.
Read chemistry.
pH, alkalinity, calcium, CYA and temp logged on every visit.
PSS computes LSI.
The Langelier formula runs live. The result lands on the visit card.
Pool drifts? Flagged.
Outside -0.3 to +0.3? PSS flags the pool on the Control Center.
What it does for the business.
Where the Orenda LSI Calculator integration pays back the setup cost — usually in the first week.
Frequently asked questions.
See Orenda LSI Calculator live inside PSS.
A dedicated demo with someone who knows pool service. No slides, no theater — just the product, connected to the tools you already use.
See Orenda LSI Calculator live inside PSS.
A dedicated demo with someone who knows pool service. No slides, no theater — just the product, connected to the tools you already use.