PAFC is a new type of macromolecular water purification agent produced by coagulation and hydrolysis of iron salt and aluminum salt. It has the characteristics of fast hydrolysis and good coagulation effect. At present, it is also used in most water treatment. The content of aluminum and iron in polyaluminum ferric chloride has always been a concern in the purchase of polyaluminum ferric chloride.

Generally speaking, the production process of polyaluminum ferric chloride can be considered as adding iron element or content compound in the production process of polyaluminum chloride. Therefore, the iron and aluminum content of polyaluminum ferric chloride need to have an index, so that the polyaluminum ferric chloride product can play a good effect in water treatment.

The aluminum content of polyaluminum chloride is in the form of alumina, and the iron content is in the form of iron oxide. The polyaluminium ferric chloride in the market generally has two kinds of solid and liquid, solid and liquid aluminum and iron content will be different. The content of alumina in liquid polyaluminium ferric chloride is about 10%, while the content of iron is between 1% and 2%, and the basicity is between 60% and 95%. The solid polyaluminium ferric chloride contains about 29% alumina, 2% to 3% iron and 60% to 95% basicity.

The content of aluminum and iron in polyaluminum ferric chloride is not adjusted casually. For example, once the content of iron in polyaluminum ferric chloride is too much, the stability of polyaluminum ferric chloride product will be very poor and it is easy to deteriorate, which is not conducive to transportation and preservation.