How to Choose Ferrous Sulfate Monohydrate

2025-11-11 10:12:26

　　With the increasingly widespread application of Ferrous sulfate monohydrate in agricultural planting, water treatment, and feed additives, various brands and specifications of products have emerged in the market, with prices ranging from RMB 1,800 to RMB 4,000 per ton, causing many buyers and end-users to face "choice difficulties."

　　1. Purity and Impurity Content are Fundamentals

　　Industrial-grade ferrous sulfate monohydrate typically requires a purity of over 90%, agricultural-grade generally not less than 85%, while pharmaceutical and food-grade require a high purity standard of over 98%. When purchasing, users must request the supplier to provide an authoritative testing report, focusing on core indicators such as iron content and sulfate content, while also being wary of excessive levels of heavy metal impurities such as lead, arsenic, and cadmium.

　　2. Choose According to Needs to Avoid "Using Too Much for Too Little"

　　(1) In the agricultural field, when used for soil improvement and fertilization of field crops, fruit trees, and vegetables, agricultural-grade ferrous sulfate monohydrate is sufficient. These products meet purity standards while being relatively affordable. (2) In industrial water treatment scenarios, ferrous sulfate monohydrate is mainly used for phosphorus removal, decolorization, and heavy metal removal. Industrial-grade products should be selected, and the solubility and reactivity of the product should be carefully considered.

　　(3) In high-end fields such as pharmaceuticals and food additives, pharmaceutical-grade or food-grade ferrous sulfate monohydrate should be used. These products have more stringent production processes, the highest requirements for purity and safety, and are relatively expensive. They are not suitable for ordinary scenarios.

　　3. Qualifications and Service Guarantees After-Sales Support

　　Users should prioritize companies with production qualifications, large scale, and a good reputation. These companies can provide stable supplies and qualified products, as well as professional technical support and after-sales service.

　　4. Storage and Transportation Conditions

　　Users can inquire about the supplier's packaging methods and storage recommendations when purchasing. High-quality products are usually packaged in sealed, moisture-proof packaging to prevent oxidation and deterioration during transportation and storage.

　　Choosing ferrous sulfate in water may seem simple, but there are actually some tricks to it. Users need to avoid the misconceptions of "only looking at the price" or "blindly choosing high specifications" and instead focus on the core principles of "purity meeting standards, impurities meeting requirements, and suitability for the application scenario." At the same time, they need to select reliable suppliers in order to achieve the goal of "choosing the right product and getting the desired effect."