High Charge Density Cationic Polyacrylamide Chemicals for Wastewater Treatment. High Charge Density: Ionic type with charge density ranging from 5% to 80% for effective flocculation. Wide pH Range: Highly effective in pH 2-9, suitable for weak acidic conditions. High Solid Content: Solid content is at least 90% for maximum efficiency. Free Samples Available: Free samples can be offered for testing, shipping cost paid by customer. Customization Options: Full customization, minor customization, and flexible customization available. ISO9001 Certified: Manufacturing process certified under ISO9001:2015 standards. Fast Delivery: Peak and off-peak season lead time within 15 workdays. Long Shelf Life: 24 months shelf life with proper storage conditions.