Polyacrylamide specifications explained
What molecular weight, charge density, residual acrylamide and the other lines on a Sunfloc specification sheet mean for your plant.
Ionic character
Anionic or cationic: the charge decides which particles the polymer grabs. It is the first choice you make.
Molecular weight
Longer chains bridge further and build bigger, stronger flocs. Sunfloc Anionic HQ is very high; Cationic HQ is high.
Charge density
How many charged groups sit along the chain. Both HQ grades are medium. Higher charge suits sludges with more organic matter.
Total solids and insolubles
How much of the granule is active polymer (88–100% on Anionic HQ, 90–100% on Cationic HQ) and how much will not dissolve (up to 2%). Insolubles can block dosing lines and filters.
Residual acrylamide
Unreacted monomer left in the polymer, given in ppm. Sunfloc HQ sheets list 0–999 ppm. Tender buyers often ask for this figure.
Viscosity
Solution viscosity at set strengths shows how the polymer behaves in your dosing system. Thicker solutions need gentler pumps and longer mixing.
Particle size
Few fines means less dust and fewer lumps when you make up the solution.
Related
Polyelectrolyte dosing guide
Starting doses, solution strength and how to work out kilograms per day.
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