Overview
Chlorine-containing disinfectants are currently widely used disinfectants and are widely used in disinfection in various water fields. In order to inhibit the re-propagation of residual bacteria, viruses and other microorganisms in the water, after the water has been disinfected with chlorine-containing disinfectants for a period of time, there should be a proper amount of residual chlorine in the water to ensure continuous sterilization ability. However, when the residual chlorine content is too high, it can easily cause secondary pollution of water, often cause the production of carcinogens, cause hemolytic anemia, etc., which has a certain harmful effect on human health. Therefore, effective control and detection of residual chlorine content is crucial in water treatment. Traditional residual chlorine detection methods are quite complicated. Water residual chlorine detection reagents greatly simplify operations, reduce testing costs, have remarkable results, and reliable data.
Product principle: Test according to the national standard DPD method.
Product use: Rapid and accurate detection of residual chlorine content in water. It is used for on-site rapid testing in various water use fields such as industry, agriculture, aquaculture, medical care, environmental protection, and daily life.
Product features:
1. Fast and simple: Users do not need special training, follow the instructions, and a water sample test can be completed in 5 minutes.
2. Accurate and reliable: The measurement results are the same as those of the national standard and can be used as an alternative to the national standard.
3. High sensitivity: The reagent is highly sensitive to residual chlorine, and can be accurate to a minimum of 0.05mg/L.
4. Low price: The cost per test is very low.
5. Easy to carry: small size, light weight, suitable for rapid on-site testing.
Usage method:
1. Rinse the colorimetric tube twice with the water sample to be tested, then use the colorimetric tube to measure the water sample to be tested and adjust it to the 15ml mark of the colorimetric tube with a plastic dropper.
2. Scoop 1 flat spoon of residual chlorine reagent (after scooping out the medicinal powder, you can use a colorimetric card to scrape it off the surface of the spoon) and add it to a colorimetric tube, shake well and dissolve it.
3. After the powder is dissolved, the color comparison can be started, and the color comparison should be completed within 5 minutes. Place the colorimetric tube vertically at a position 1 cm high from the blank of the colorimetric card and visually compare the color from top to bottom to find the color code with the same color as the liquid in the tube, and you can read the residual chlorine content of the water sample to be tested.
Notes:
1. The detection range of residual chlorine content in this product is 0.05-1.0mg/L. If the residual chlorine content of the water sample to be tested is higher than the upper limit of the test, the water sample can be diluted with distilled water before testing, read the number and then multiply it by the corresponding dilution multiple.
2. If the powder is somewhat agglomerated, you can crush it with a spoon before using it. Because the reagent itself is excessive, a slight change in the amount each time after scraping the spoon will not affect the test results.
3. If the water sample is turbid, it can be filtered or left to clarify, and then the supernatant can be taken for testing.
4. The pH value of the water sample to be tested must be within the range of 5-8.
5. The presence of other oxidants interferes with this method.
6. Try to compare color under good light.
7. If it comes into contact with skin or eyes during use, wash it with water.
Product description: Residual chlorine reagent: gray powder
Product specification: Residual chlorine reagent: 5 g/bottle (50 times per box)
Product composition: 1 bottle of residual chlorine reagent, 1 color comparison tube, 1 plastic dropper, 1 medicine spoon, 1 color comparison card, 1 instruction manual.
Product packaging: HDPE bottles, cartons
Product standard: QB-TCS-WTR-2011
Valid period: 1 year
Storage method: Store in a cool, dark and place that is not easy to reach by children.
Related knowledge: Several forms of chlorine exist in water:
Residual chlorine (free chlorine): Chlorine in the form of hypochlorous acid, hypochlorite ions and dissolved elemental chlorine.
Combined chlorine: Part of total chlorine in the form of chloramines and organochloramines.
Total chlorine: Chlorine that exists as residual chlorine or combined chlorine or both.
Product principle: Test according to the national standard DPD method.
Product use: Rapid and accurate detection of residual chlorine content in water. It is used for on-site rapid testing in various water use fields such as industry, agriculture, aquaculture, medical care, environmental protection, and daily life.
Product features:
1. Fast and simple: Users do not need special training, follow the instructions, and a water sample test can be completed in 5 minutes.
2. Accurate and reliable: The measurement results are the same as those of the national standard and can be used as an alternative to the national standard.
3. High sensitivity: The reagent is highly sensitive to residual chlorine, and can be accurate to a minimum of 0.05mg/L.
4. Low price: The cost per test is very low.
5. Easy to carry: small size, light weight, suitable for rapid on-site testing.
Usage method:
1. Rinse the colorimetric tube twice with the water sample to be tested, then use the colorimetric tube to measure the water sample to be tested and adjust it to the 15ml mark of the colorimetric tube with a plastic dropper.
2. Scoop 1 flat spoon of residual chlorine reagent (after scooping out the medicinal powder, you can use a colorimetric card to scrape it off the surface of the spoon) and add it to a colorimetric tube, shake well and dissolve it.
3. After the powder is dissolved, the color comparison can be started, and the color comparison should be completed within 5 minutes. Place the colorimetric tube vertically at a position 1 cm high from the blank of the colorimetric card and visually compare the color from top to bottom to find the color code with the same color as the liquid in the tube, and you can read the residual chlorine content of the water sample to be tested.
Notes:
1. The detection range of residual chlorine content in this product is 0.05-1.0mg/L. If the residual chlorine content of the water sample to be tested is higher than the upper limit of the test, the water sample can be diluted with distilled water before testing, read the number and then multiply it by the corresponding dilution multiple.
2. If the powder is somewhat agglomerated, you can crush it with a spoon before using it. Because the reagent itself is excessive, a slight change in the amount each time after scraping the spoon will not affect the test results.
3. If the water sample is turbid, it can be filtered or left to clarify, and then the supernatant can be taken for testing.
4. The pH value of the water sample to be tested must be within the range of 5-8.
5. The presence of other oxidants interferes with this method.
6. Try to compare color under good light.
7. If it comes into contact with skin or eyes during use, wash it with water.
Product description: Residual chlorine reagent: gray powder
Product specification: Residual chlorine reagent: 5 g/bottle (50 times per box)
Product composition: 1 bottle of residual chlorine reagent, 1 color comparison tube, 1 plastic dropper, 1 medicine spoon, 1 color comparison card, 1 instruction manual.
Product packaging: HDPE bottles, cartons
Product standard: QB-TCS-WTR-2011
Valid period: 1 year
Storage method: Store in a cool, dark and place that is not easy to reach by children.
Related knowledge: Several forms of chlorine exist in water:
Residual chlorine (free chlorine): Chlorine in the form of hypochlorous acid, hypochlorite ions and dissolved elemental chlorine.
Combined chlorine: Part of total chlorine in the form of chloramines and organochloramines.
Total chlorine: Chlorine that exists as residual chlorine or combined chlorine or both.
Supply & Ordering
- Packaging
- cylinders / ton drums / ISO tanks / tankers (by grade and order size)
- Minimum order
- confirmed on enquiry; negotiable for bulk purchases
- Terms & lead time
- FOB / CIF / EXW and others confirmed on request
Please confirm the exact packaging, minimum order and lead time via the enquiry form below.
About WULA
WULA was founded in 2013. We are a refrigerant supply organizer, focused on moving goods from the production line to the customer's own line and site.
- Compliance paperwork
- We help customers meet compliance requirements: sales filing, per-transaction verification, quarterly reporting and three-year retention of documents.
- Order handling
- Scattered orders are managed through consolidated, data-driven administration to keep procurement efficient.
- Supply allocation
- Forecasting and coordinated allocation across multiple warehouses, to keep supply stable.
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常见问题
Water Quality Residual Chlorine Test Reagent (DPD Method) is a refrigerant/chemical product. It is widely used in refrigeration equipment such as refrigerators, freezers, water dispensers, automotive air conditioners, central air conditioning, dehumidifiers, cold storage and commercial refrigeration, as well as in aerosol propellants, blowing agents, fire-extinguishing and cleaning applications. See the product page for details.
Water Quality Residual Chlorine Test Reagent (DPD Method) is used as a common working fluid in refrigeration, air-conditioning and industrial applications. When replacing or retrofitting a system, qualified personnel should perform the work, paying attention to system compatibility and lubricant matching, and following relevant safety standards.
Store in a cool, dry, well-ventilated warehouse away from fire, heat sources and direct sunlight. Cylinders should be placed upright and protected from falling. Transport according to regulations for high-pressure gases or hazardous chemicals, with careful handling to avoid damage to cylinders and valves.
Ensure adequate ventilation at the workplace. Avoid direct skin contact with liquid refrigerant (risk of frostbite). Keep away from open flames and high heat. Use dedicated tools and protective equipment. In case of leakage, evacuate, ventilate and contact professionals.
The exact Ozone Depletion Potential (ODP) and Global Warming Potential (GWP) are listed in the Physical Properties table on the product page. Select refrigerants considering energy efficiency, safety and environmental impact.
Multiple package sizes are available (e.g., cylinders, drum or ton packages - see product page). Bulk orders are supported. Contact sales for the latest quote and lead time.
