Shanghai Haiheng Electromechanical Instrument Co., Ltd
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    18017722646
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    Room 240, 1266 Pujin Road, Minhang District, Shanghai
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Product details
Product Introduction

1、 Product Usage:

The YL-2B portable DPD residual chlorine and DPD total chlorine three range tester is suitable for detecting the concentration of residual chlorine and total chlorine in large, medium, and small water plants, industrial and mining enterprises, domestic or industrial water, in order to control the residual chlorine and total 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 place this water sample into a photoelectric colorimetric stand, and the instrument will compare the depth of red to obtain the concentration of residual chlorine and total chlorine. The usage method shall follow the national standard HJ586-2010


3、 Technical parameters:

measuring range

0-2.5mg/L(DPD residual chlorine)

0-10mg/L(DPD residual chlorine)

0-10mg/L(DPD total chlorine)

Minimum indication

0.001mg/L

repeatability

≤2%

Indication error

±5%FS

power supply

AC 220V 50Hz


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. AC/DC dual-use, high-performance lithium battery,Can be used continuously4Hour, charge and use immediately.

4. High resolution.




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DPD small packet powder 40 packets, 1 packet 1 time



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.

For more information, please scan the QR code:

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