Water Temperature (Fahrenheit or Celcius)		*C *F
Ca (mg/L):		CaCo3 Ca2+
Alkalinity (mg/L as CaCO3):
pH
TDS (mg/L):
pHs :
Langelier Index:
Ryznar Stability Index :

Langelier Saturation Index	Description	General Recommendation
-5	Severe Corrosion	Strong Corrosion Inhibitor Treatment Required
-3	Moderate Corrosion	Strong Corrosion Inhibitor Treatment Required
-2	Moderate Corrosion	Corrosion Inhibitor Treatment Required
-1	Mild Corrosion	Corrosion / Scale Treatment Required
-0.5	None- Mild Corrosion	Corrosion / Scale Treatment Required
0	Near Balanced	Balanced Treatment Required
0.5	Some Faint Coating	Scale preventive Treatment Required
1	Mild Scale Coating	Scale preventive Treatment Required
2	Mild to Moderate Coatings	Scale preventive Treatment Required
3	Moderate Scale Forming	Strong Scale preventive Treatment Required
4	Severe Scale Forming	Strong Scale preventive Treatment Required

Ryznar Stability Saturation Index	Description	General Recommendation
4 - 5	Highly Scale Forming	Polymer Scale Preventive Treatment Required
5 - 6	Slightly Scale Forming	Genral Scale Preventive Treatment Required
6 - 7	Slightly Scale Forming / Corrosive	Treatment according to other parameter Required
7 - 7.5	Corrosive	Corrosion inhibitor Treatment Required
7.9 - 9	Highly Corrosive	Strong Corrosion inhibitor Treatment Required
9 and Over	Very Highly Corrosive	Strong Corrosion inhibitor Treatment Required

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