Polymeric algaecide active · Ingredient identity
Algaefix polyquaternary ammonium polymer
The long polymer name identifies the active in the EPA Algaefix master label. “Polyquat” alone can refer to a broader set of polymers.
Look for: Poly[oxyethylene(dimethyliminio)ethylene(dimethyliminio)ethylene dichloride]
Use the record
Read the exact ingredient line
Where it appears
The EPA document for registration 8709-8 prints the polymer name and separates certain freshwater and saltwater wording into different sublabels.
What cannot be inferred
The master label includes optional wording and different presentations. Neither the polymer name nor the shared registration number tells you which directions appear on the bottle.
What to capture
Record the full active line, printed registration number and freshwater or marine wording. Keep the specific sublabel beside any livestock statement.
Formulation references
Read the original
Sources and date
Sources consulted . A source date does not establish that every market, pack or revision uses the same wording.