There are some organic substances that are not retained in the filter because they are too small, and these cause the water to become cloudy. These turbid substances can be bound by an appropriate flocculating agent, which causes them to stick together to form flocs so they can be filtered out. Flocculating agents are available in liquid form, as flakes or as flocculation cartridges.

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Product	Description
Liqui-Floc® 30	Monomer aluminium chloride solution in accordance with DIN 19643 and DIN EN 881, with ca. 7% Al2O3, basicity ca. 30%
Liqui-Floc® 40 concentrate	Poly aluminium hydroxide chloride solution in accordance with DIN EN 883, with ca. 18% Al2O3, basicity ca. 40%
Liqui-Floc® 80	Poly aluminium hydroxide chloride solution in accordance with DIN EN 883, with 4%, 7%, 9% or 12% Al2O3, basicity ca. 80%
Liqui-Floc® 80 concentrate	Poly aluminium hydroxide chloride solution in accordance with DIN EN 883, with ca. 23% Al2O3, basicity ca. 80%
Liqui-Floc® A	Aluminate lye in accordance with DIN EN 882, alkalkine, ca. 7% Al2O3;
Liqui-Floc® PAC-S	Poly aluminium hydroxide sulfate solution in accordance with DIN EN 883, with 4% or 8,5% Al2O3; basicity ca. <40%
Floc-scales	Solid poly aluminium hydroxide chloride in accordance with DIN EN 883, scales, ca. 48% Al2O3;
Water clear	Solid poly aluminium hydroxide chloride packed in fleece pillow
Liqui-Floc® FE	Ferric chloride solution in accordance with DIN 19643 and E DIN EN 888 with 4% or 8% Fe2O3