What are the water quality tester test items?

Water quality safety directly affects human health and the ecological environment, and water quality testers are important tools for monitoring water quality. So, what does a water quality tester measure? What key indicators can it detect? This article will introduce the core detection items of water quality testers in detail, including conventional indicators, disinfectants, heavy metals, etc., and analyze its application in different industries to help you fully understand the importance of water quality detection.

1. Conventional water quality indicators: evaluate the basic conditions of water bodies

The basic detection items of water quality testers are conventional water quality indicators, including:

COD (chemical oxygen demand): reflects the content of organic pollutants in water bodies. The higher the value, the more serious the pollution.

Ammonia nitrogen, total nitrogen, total phosphorus: mainly derived from domestic sewage and agricultural discharge. Too high will lead to eutrophication of water bodies and cause algae outbreaks.

pH value, dissolved oxygen (DO), turbidity: measure the acidity, oxygen content and clarity of water bodies, directly affecting the living environment of aquatic organisms.

Permanganate index: used to evaluate the oxidation degree of organic and inorganic pollutants in water bodies.

These indicators are the key basis for judging whether the water quality is suitable for drinking, irrigation or industrial use.

2. Disinfectants and heavy metals: ensuring drinking water safety

In addition to conventional indicators, water quality testers can also detect disinfection by-products and heavy metals to ensure drinking water safety:

Disinfectant detection: including residual chlorine, total chlorine, chlorine dioxide, etc., used to evaluate the disinfection effect of tap water, but excessive residues may be harmful to the human body.

Heavy metal detection: such as lead, mercury, arsenic, cadmium, chromium, etc., these toxic metals can harm health even in trace amounts, and long-term intake may cause chronic poisoning.

Water quality testers accurately measure these harmful substances through spectrophotometry or electrochemical methods, helping regulatory authorities, water plants and home users to detect problems in a timely manner.

3. Other key indicators: water quality monitoring in special industries

In response to the needs of different industries, water quality testers can also detect more professional indicators:

Industrial wastewater: toxic substances such as cyanide, sulfide, volatile phenols, etc. need to be monitored to prevent environmental pollution.

Aquaculture: Pay attention to dissolved oxygen, ammonia nitrogen, and nitrite to ensure the healthy growth of fish.

Medical and food industries: microorganisms, ozone, anionic surfactants, etc. need to be tested to meet hygiene standards.

The water quality tester uses intelligent detection technology, such as 360° rotating colorimetric tubes and dual-temperature zone digestion, to improve detection accuracy and meet the needs of rapid laboratory and outdoor testing.

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