Water quality detectors are widely used in power, chemical, petroleum, papermaking, printing and dyeing, coal, metallurgy, environmental monitoring, food hygiene, tap water, hydrogeology, and other fields.

Applicable to the concentrations of trivalent chromium, hexavalent chromium, magnesium, phosphorus, ammonia, nitrogen, chlorine, cobalt, zinc, potassium, copper, silver, molybdenum, cadmium, nickel, iron, manganese, aluminum, calcium, arsenic, cyanide, chloride, sulfide, bromide, volatile phenol, urea, phosphate, fluoride ion, petroleum (mineral oil), animal and vegetable oil, total oil, smoke (cooking oil fume) oil content, nitrate/nitrite nitrogen, sulfate, permanganate, formaldehyde, chlorine dioxide, silicon dioxide, ozone, dissolved oxygen, lignin tannin chemical oxygen consumption (CODCr), turbidity, and pH.

Simultaneously detect dissolved oxygen (DO), conductivity, salinity, total dissolved solids (TDS), apparent specific gravity of seawater, temperature, turbidity, depth, oxidation-reduction potential (ORP), and three types of ions (three can be selected from six types including nitrate ions, chloride ions, calcium ions, fluoride ions, potassium ions, and ammonia).

The working principle of the water quality detector is to determine the toxicity of the water sample by detecting the inhibition rate of the luminescence intensity of luminescent bacteria by the comprehensive toxicity of the water quality. The pH value of water depends on the amount of dissolved substances, so pH value can sensitively indicate changes in water quality. The change in pH value has a significant impact on the reproduction and survival of organisms, and also seriously affects the biochemical process of activated sludge, which affects the treatment effect. The pH value of sewage is generally controlled between 6.5 and 7. The pH value is usually measured by potentiometry, using a constant potential reference electrode and a measuring electrode to form a primary cell. The magnitude of the electromotive force of the primary cell depends on the concentration of hydrogen ions and the acidity or alkalinity of the solution.

Water quality detector, a professional instrument used to analyze the content of water components, mainly refers to measuring BOD, COD, ammonia nitrogen, total phosphorus, total nitrogen, turbidity, etc. in water PH、 In order to protect the water environment, instruments for dissolved oxygen and other projects must strengthen the monitoring of sewage discharge. Quality detectors play an important role in environmental protection, water quality detection, and water resource protection.

The oxygen content in water can fully demonstrate the degree of self purification of water. For biological treatment plants that use activated sludge, it is important to understand the oxygen content in the aeration tank and oxidation ditch. An increase in dissolved oxygen in wastewater can promote biological activities other than anaerobic microorganisms, thereby removing volatile substances and easily oxidizable ions, and purifying the wastewater.