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Organophosphonate
Alkalinity
Bromine
Chelant
Chloride
Chlorine
Conductivity
Copper
DEHA
Dissolved Oxygen
Hardness
Legionella
Molybdenum
Organophosphonate
pH
PTSA
Sulfite
Silt Density Index
Nitrite
Acidity
COD
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Knowledge Base
Organophosphonate
Alkalinity
Bromine
Chelant
Chloride
Chlorine
Conductivity
Copper
DEHA
Dissolved Oxygen
Hardness
Legionella
Molybdenum
Organophosphonate
pH
PTSA
Sulfite
Silt Density Index
Nitrite
Acidity
COD
Organophosphonate
The test kit (TK0159) does not provide accurate answers.
What should I do when my endpoint is gray, not purple or blue?