Q-CL501B Free Chlorine &Total Chlorine&Combined Chlorine Portable Colorimeter

Q-CL501B Free Chlorine &Total Chlorine&Combined Chlorine Portable Colorimeter,
Chlorine Analyzer Unit, Chlorine Measuring Kit, Combined Chlorine, DPD, EPA, Free Chlorine, Portable Colorimeter, Total Chlorine, Water Chlorine Tester,

Application:

Q-CL501B portable colorimeter is designed for the testing of free chlorine, total chlorine, combined chlorine in drinking water and waste water. It can be widely used in the field of urban water supply, food and beverage, environmental, medical, chemical, pharmaceutical, thermal power, paper making, farming, bio-engineering, fermentation technology, textile printing and dyeing, petrochemical, water treatment and other water quality site rapid testing or laboratory standards detection.

Features:

※This is a detection instrument that can detect free chlorine, total chlorine, and combined chlorine;

※Using the latest micro-programming technology and highly integrated circuits ensure the reliability and perdurability of the instrument;

※This device has a time-saving and convenient detection mode. It only needs three steps of zeroing the sample, adding the corresponding reagent and pressing the key to complete the water sample test;

※It is developed by Sinsche autonomously with three patents;

※EPA based automation technique and calibrated standard curve improve the stability and repeatability;

※Quantitative packaging-specific reagents, the combination of well-chosen accessories, outdoor detection is no longer a tedious work;

※150g net weight and simple keypad with five buttons help relieve your working burden during testing;Chlorine is one of the indicators that water quality testing often needs to determine.

Recently, the editor received feedback from users: When using the DPD method to measure Chlorine, it clearly smelled a heavier smell, but the test did not show color. What is the situation? (Note: The user's disinfectant margin requirements are relatively high)

Regarding this phenomenon, let’s analyze with you today!

First of all, the most widely used method for detecting chlorine is DPD spectrophotometry. According to EPA: The residual chlorine range of the DPD method is generally 0.01-5.00 mg/L.

Secondly, hypochlorous acid, the main component of free chlorine in water, has oxidizing and bleaching properties.Use the DPD method to measure residual chlorine in water: When the chlorine content in the water sample is too high, after DPD is completely oxidized and developed, more chlorine will show the bleaching property, and the color will be bleached, so it will appear This phenomenon of the problem at the beginning of the article.

In view of this situation, the following two solutions are recommended.

1. When using the DPD method to detect chlorine, you can dilute the water sample with pure water so that the chlorine is within the range of 0.01-5.00 mg/L, and then perform the detection.

2. You can directly select equipment that detects high concentration of residual chlorine for detection.