For any procurement manager or R&D scientist involved in water treatment or industrial processes, ensuring the quality of Polyaluminum Chloride (PAC) is paramount. Sourcing from reliable manufacturers in China, such as ourselves, requires a keen understanding of the critical quality indicators that guarantee optimal performance and value. This guide outlines what buyers should look for when they plan to purchase PAC.

The most crucial parameter for PAC is its Al2O3 content, which directly correlates with its coagulating power. Higher Al2O3 content generally indicates a more effective coagulant. Our product specifications typically list Al2O3 content ranging from 28% to 30% for industrial grades, ensuring high efficacy. Buyers should always verify this specification with their supplier. A certificate of analysis (CoA) from the manufacturer is essential for confirming the stated Al2O3 levels.

Another key characteristic is basicity, which refers to the degree of polymerization and hydrolysis of the aluminum species in PAC. Basicity influences the charge density and stability of the polynuclear complexes. The commonly specified range is 40-90%. Different basicity levels are optimized for different water conditions and applications. For instance, higher basicity can sometimes lead to more efficient floc formation in certain types of wastewater. When you buy Polyaluminum Chloride, understanding the target basicity for your application is vital.

The physical appearance and water-insoluble matter are also important indicators. Our Polyaluminum Chloride is typically a yellow powder, and its water-insoluble content should be minimal (e.g., ≤ 1.0% for first-grade products). High levels of insoluble matter can reduce the effective dosage and potentially clog equipment. Always check the product's physical description and the limit for insoluble impurities provided by the supplier.

Furthermore, compliance with industry standards and certifications, such as GB15892-2009, WQA, or REACH, signifies that the product has undergone rigorous testing and meets specific quality and safety requirements. As a manufacturer with extensive experience, we pride ourselves on adhering to these standards, offering transparent documentation, and providing excellent technical support to help you select the right PAC. If you are looking to buy PAC, prioritize suppliers who offer comprehensive quality assurance and are willing to provide detailed product information and samples for your evaluation.