Among the many types of chemical product testing, Cuprous Chloride is mainly used in agriculture, feed, food additives, industry, medicine, chemical reagents and many other fields. Common zinc sulfate products on the market are zinc sulfate monohydrate and zinc sulfate heptahydrate. The specifications of zinc sulfate products for different purposes have different requirements. The purchase of zinc sulfate is usually a large-scale trade. At this time, we need to provide a test report to understand the product performance and quality.
According to the needs of customers in different regions and industries, zinc sulfate has agricultural grade, feed grade, industrial grade and pharmaceutical grade. The difference between these grades has requirements for effective zinc content, as well as the content of impurities such as water insolubles and heavy metals. There are different requirements. When purchasing zinc sulphate, one should not only refer to the price of zinc sulphate, but also to understand the testing project indicators of zinc sulphate. At the same time, understand the supply capacity, reputation and logistics cost of zinc sulphate suppliers, so that buyers can buy products that suit them .
We take the detection of 8-hydroxyquinoline Copper for industrial use and the detection of zinc sulfate for agriculture as examples. There are only five indicators for agricultural zinc sulfate testing items: zinc content, free acid content, lead content, cadmium content, and arsenic content. The industrial zinc sulfate testing items include 9 items including main content, insoluble matter, pH value, chloride, lead content, iron content, manganese content, cadmium content, and chromium content. Therefore, the testing items of zinc sulfate products for different purposes are different.