Online Residual Chlorine Probe

Lohand Biological online residual chlorine electrode consists of cathode and anode,cathode is gold electrode,anode is silver/silver chloride electrode,cathode and anode are immersed in electrolyte chamber filled with electrolyte,through film and measurement environment isolation,film can prevent electrolyte leakage or contaminant infiltration,but hypochlorous acid can pass through the film,the measured hypochlorous acid concentration and the measured current proportional relationship,through pH compensation,to obtain the residual chlorine concentration.
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Product Details



Measuring   range


Lower   limit


Ph   range





0.05mg/L   or 5% larger as the standard

Respinse   time


Velocity   of flow





1.           chemical engineering

2.           water treatment plant

3.           water quality monitoring station

4.           metallurgy

5.           forge

6.           the textile and printing and dyeing industry

7.           pharmaceutical industry

8.           water works

9.           agriculture

10.        water treatment engineering

11.        laboratory



Our company

Founded in 2008, Hangzhou Lohand Biological Technology Co., Ltd. Is a company that designs, develops, produces and sells water quality rapid test strips, reagents and precision testing instruments. It is located in Jianggan Science and Technology Park and relies on Zhejiang University Food Science and Technology Park and the West lake Science and Technology Park, focusing on technological innovation, has obtained a number of patents and produces provide customers with professional, fast, affordable and simple testing products and services to create a new history of water quality monitoring.

In the course of ten years of development, we have been constantly working hard in this field, and constantly improving product functions, testing accuracy, dedicating to environmental water quality monitoring and rapid monitoring of product development. The products developed and produced mainly include COD, ammonia nitrogen, total phosphorus, total ammonia integrated machine, miniature COD reactor, water quality monitoring electrode, digital refractometer, etc. Most of the company’s products have obtained CE certification; widely used in domestic environmental protection bureaus, industrial enterprises, university research institutes, food manufacturing enterprises; especially electrochemical testing products have been sold at domestic and foreign.

We sincerely welcome domestic and foreign merchants to achieve win-win cooperation, common development and create brilliant!


Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

To complete your return, we require a receipt or proof of purchase.

There are certain situations where only partial refunds are granted (if applicable)
- The goods has been used.
- Any item not in its original condition, is damaged or missing parts for reasons not due to our error
- Any item that is returned more than 30 days after delivery

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