At present, colorimetry is a method widely used in water quality detection, and it has high sensitivity. If the content of a certain substance in the water to be measured is very low, it can be detected by colorimetry after concentration, extraction, co-p

When detecting the dissolved oxygen parameters of water quality, redox titration is a commonly used and effective method, but it must be performed quickly when operating titration. In redox titration, it is not only necessary to judge the feasibility of t

There are many types of spectrophotometers in water quality detectors in daily applications. Generally, we can divide them into 300-800nm spectrophotometers, 200-1000nm UV-visible spectrophotometers, and 760-400000nm infrared spectrophotometers according

Natural water bodies will produce turbidity when they are polluted. Therefore, the parameters of suspended solids in the detection of surface water, groundwater, domestic sewage and industrial wastewater can reflect the degree of water pollution. There ar

Nitrite in drinking water is a substance produced by the nitrogen cycle. It is usually extremely unstable and will be oxidized by microorganisms to become nitrate in the presence of oxygen. Although nitrate itself is not harmful, nitrate will be reduced t

Natural water contains a lot of salts, the main components of which are calcium, magnesium, sodium and other bicarbonates, chlorides and sulfates. If the content of these elements in the water quality is too large, some problems will occur. For example, e

At present, there are two main methods to detect the residual chlorine in water: o-toluidine colorimetry and DPD residual chlorine colorimetry. Now, DPD residual chlorine detection method is basically used in various types of water plants, industrial and

The concept of error in water quality analysisWater quality analysis and monitoring need to use a variety of measurement methods to complete the experiment. Because the measured numerical form can not be expressed in finite digits, and due to the lack of

In water quality analysis, cod is a common detection parameter, which reflects the pollution degree of water by reducing substances, mainly including nitrite, ferrous salt, organic matter and sulfide. The main purpose of COD determination is to measure th

Significance of microbial detection in waterThe application of reclaimed water in life is very extensive, but now the problem of water quality is becoming more and more serious. To understand the specific situation of water quality changes, the detection