Polyferric sulfate is a kind of inorganic polymer coagulant with superior performance. As an excellent coagulant for sewage, its effect is affected by its quality. Besides the total iron content and base degree, the product quality is also affected by the density and pH value of the product.

So what is the density of PFS? What factors affect it?

The density of PFS refers to the ratio of its mass to volume, i.e. specific gravity. Taking the liquid products produced by our company as an example, when the total iron content is 11-13%, the density is 1.33-1.45g/cm3, and the pH value is 2-3.

Generally speaking, with the change of temperature and pressure, the volume or density will change accordingly. Therefore, the control of temperature and pressure is very important in production.

If the density of PFS is used to judge the product, the following standards can be referred to. Generally speaking, when the density is 1.3, the product is qualified. When the density reaches 1.45, it can be judged as a high-quality product. In this value, it can be said that the higher the density, the better the product quality.

The density of PFS can be detected by densimeter. The specific operation is: put the product into the measuring cylinder, put the measuring cylinder into the constant temperature pool, and put it into the densimeter for measurement after the temperature is stable.