Sedimentation and Sand-Filtration Pretreatment PAC-02 Yellow Polyaluminium Chloride for Sedimentation and Sand-Filtration Pretreatment Spray-dried yellow PAC developed to build stronger settleable floc and reduce the fine-particle load reaching rapid sand filters. Al2O3 Content 30% Min. Basicity 45–85% Insolubles 0.1% Max. Standard Packaging 25kg Bags Product Short Description PAC-02 is a spray-dried yellow powder polyaluminium chloride developed for sedimentation and sand