Chromium usually exists in water polluted by industrial wastewater such as electroplating, smelting, tanning, textile and pharmaceutical industries. Generally, chromium exists in water in the form of trivalent and hexavalent. Hexavalent chromium is more t

When testing the turbidity parameters of water samples, it is a weight technology to ensure the accuracy of turbidity measurement results to be able to accurately prepare the standard solution of formazine. Therefore, as a qualified water quality tester,

For the water quality tester, there is some data that cant be obtained whether it is on-site inspection or in the laboratory. For example, the detection of microorganisms in drinking water quality, if you want to get their data, if you rely on the water q

Manganese ions exist widely in natural water. Therefore, domestic drinking water itself contains a small amount of metal ions, such as common iron ions, manganese ions, copper ions, etc. We have previously introduced that heavy metals in general water mai

Most of the benzene series are found in the atmosphere, so the detection of this substance is mostly found in the air standards, but the content of benzene series in industrial wastewater is also very large, so the content of benzene series in the water q

Coexisting ions and compounds in groundwater and surface water do not interfere with the determination at common concentrations. When the concentration of calcium is higher than 1000mg/L, the absorption of cadmium is inhibited. When the concentration is 2

Most of the aluminum in daily drinking water comes from the alum used in the treatment. Under normal circumstances, the content of aluminum in natural water is actually very low. In addition, the "Sanitary Standards for Drinking Water" clearly s