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Tenselo Tenselo Water Engineering Tools
Langelier Saturation Index

Dose right. Stay compatible. Don't corrode.

Dose rates, chemical compatibility, pH / alkalinity and LSI scaling risk at a glance. Built for operators and dosing technicians.

A worked example

LSI −0.35

Slightly corrosive — aim −0.2 to +0.2

These figures come from the Tenselo engine. Every result Tenselo produces shows the inputs it used and the method behind it, so the work can be checked rather than taken on trust.

Inputs
pH 7.5
Temperature 20 °C
Calcium 120 mg/L
Alkalinity 100 mg/L
Results
−0.35
LSI
Corrosive
Tendency
7.5
pH
120 mg/L
Calcium
100 mg/L
Alkalinity
20 °C
Temp

Why it matters on the job

Scale or corrode — you'll know

LSI tells you which way the water leans and how far, before it eats a main or furs a heater.

Doses that land

Acid, chlorine and coagulant rates worked to flow and target.

Compatibility checked

What you can store and mix safely — and what you can't.

What is in this category

12 Chemicals, Dosing & Chemistry calculators

Every calculator in this category, by its reference code. Running them needs a Tenselo subscription — subscriptions open soon.

  • CHM-001 Acid Dilution

    C1*V1 = C2*V2 with safety factor

  • CHM-002 Chemical Dosing & Feed Rate Pump Sizing

    Dose -> kg/day, L/day, pump mL/min & drum run-time

  • CHM-003 Chlorine Shock Dose

    Liquid chlorine volume for a target ppm (AU w/v strengths)

  • CHM-004 Disinfection CT

    Contact-time dose product (free chlorine basis)

  • CHM-005 Dosing Pump Rate

    Inject target mg/L from a stock g/L

  • CHM-006 pH / Alkalinity Adjustment Dose

    Acid or alkali dose to shift alkalinity by a target amount (stoichiometric, mg/L & kg/day)

  • CHM-007 Corrosion & Scaling Indices

    LSI / Ryznar / Puckorius / Larson-Skold from one analysis

  • CHM-008 EC / TDS Conversion

    Electrical conductivity to total dissolved solids

  • CHM-009 Hardness / Free CO2

    Convert mg/L CaCO3 to grains, estimate free CO2

  • CHM-010 LSI (Langelier)

    Scaling vs corrosion balance

  • CHM-011 Chemical Compatibility

    Chemical + strength + temperature -> pipe, fitting, sealant & seal materials

  • CHM-012 Chemical Mixing / Reaction Hazard

    Pick two chemicals - the likely reaction (toxic gas, fire, heat, gel), the product + formula and a plain-English warning (NOAA/CCPS reactive groups)

Subscriptions open soon

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