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PA material, polyamide or commonly called nylon, is manufactured by Ensinger in standard stock shapes for machining in sheet, rod and tube. There are often numbers associated with nylon plastics types such as 6, 66, 12 and 46. These numbers
3 ·6H 2 O] or poly aluminum chloride with a concentration of 1000 mg/L. The electrolyte used was potassium chloride KCl. Sodium hydroxide and hydrochloric acid, were used for pH adjustment. The chemical ingredients utilized in this study were
