1、 Product Usage:

The YL-D portable residual chlorine range tester is suitable for detecting residual chlorine concentration in large, medium, and small water plants, industrial and mining enterprises, domestic or industrial water, in order to control the residual chlorine in water to meet the specified water quality standards.

2、 Product principle:

This instrument adopts the DPD method and applies the principle of microcomputer photoelectron colorimetric detection to replace the traditional visual colorimetric method. Eliminating human error, the measurement resolution is greatly improved. When measuring, when the tested water sample is poured into the reagent, the water sample will turn red. Then put this water sample into the photoelectric colorimetric stand, and the instrument will compare the depth of red to obtain the concentration of residual chlorine and total chlorine.

3、 Technical parameters: 　　　　　　　　　　　

4、 Product features:

1. Microcomputer, touch sensitive keyboard is easy to use.

2. It can automatically zero and calibrate from 1 to 5 points.

3. Dual use AC/DC, high-performance lithium battery, can be continuously used for 4 hours after charging for 4 hours, ready to use.

4. High resolution.

Little knowledge | What is residual chlorine?

Residual chlorine refers to chlorine added to waterdisinfectAfterwards, in addition to consuming a portion of chlorine through interactions with bacteria, microorganisms, organic matter, inorganic matter, etc. in the water, there is still a remaining amount of chlorine, which is called residual chlorine.

There are generally three forms of residual chlorine in tap water: 1. Total residual chlorine. Contains free residual chlorine and compound residual chlorine. 2. Free residual chlorine. Contains substances such as HOCl and OCl -. 3. Chemical residual chlorine. Contains substances such as NH2Cl and NHCl2.

If the residual chlorine concentration in tap water is too high, the main hazards include strong irritation and damage to the respiratory system. Easy to react with organic matter in water, producing carcinogens such as chloroform and trichloromethane. As a raw material for production, it may have adverse effects.

At present, China's drinking water standards have clear regulations that the residual chlorine content in tap water shall not be less than 0.3 milligrams per liter.

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