Water quality chromaticity

Chromaticity is an important physical and chemical indicator of water quality, which evaluates depth of water color and reveals existence of humus, dissolved organic materials, and pollutants. Platinum Cobalt Chromaticity Units (PCU) are used to test drinking water, surface water, industrial effluent and other water quality characteristics. The Sino Inst water quality chromaticity detection series contains lab desktop and portable on-site equipment. It can rapidly and reliably detect the chromaticity of various water bodies via photoelectric colorimetry and platinum cobalt standard colorimetry. It is ideal for quantitative analysis of chromaticity in environmental protection, water affairs, printing and dyeing, chemical industry, food, etc.

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The core significance of chromaticity detection

  • Drinking water safety: indicates the degree of organic pollution of water sources and helps to assess the effectiveness of water purification techniques.
  • Industrial Waste Water Control: Check up on the norms of waste water discharge from enterprises such as printing and dyeing, papermaking etc.
  • Monitoring of surface water quality: Assessment of river and lake water quality, indicating the degree of pollution and eutrophication.
  • Process control: Quality monitoring of water used in food, pharmaceutical, electrical and other sectors.
  • Emergency screening: Quickly determine the degree of pollution at the site of abrupt water pollution incidents.

True color and surface color

  • True color: The color caused only by dissolved substances after removing suspended particles in water, which is the standard measurement object for water quality testing. The water sample needs to be clarified or centrifuged before testing.
  • Color expression: All colors, including suspended particles, that are directly observed when the water sample is not treated, are greatly affected by turbidity and are usually not considered as formal test results.

Main Industry Application Scenarios

  • Ecological environment monitoring Environmental monitoring stations at all levels conduct routine color monitoring and emergency screening of surface water, groundwater and drinking water sources.
  • Urban water supply and drainage Chromaticity test for input and outflow of water plants and outfall of sewage treatment plant to verify the water supply quality and drainage standards.
  • Printing and dyeing textile industry : Comparing the chromaticity of printing and dyeing wastewater before and after treatment , evaluating the decolorization process effect and meeting the discharge regulations.
  • Papermaking and Chemical Industry: Determination of chromaticity of papermaking white water, chemical process water and effluent; auxiliary process modification and pollution management.
  • Food & Beverage Production Color detection of purified water, beverage and brewing water to control the product sensory and raw material quality.
  • Pharmaceutical and Electronics: Pharmaceutical purified water and electronic grade ultrapure water trace color detection meets the need for high-standard production water.
  • Research and universities: Quantitative measurement of water quality chromaticity in experimental teaching and research initiatives in environmental, chemical and water conservancy specialties

Why choose us？

Deeply involved in the field of water quality monitoring, with a mature product system and rich project experience, we can provide one-stop procurement and customized solutions. The product is stable and reliable, easy to operate and maintain, with a high pass rate, which can effectively help enterprises reduce costs, comply with emissions regulations, and provide reliable support for environmental protection.

Technical Support

The essence of the three is the same, and they are all defined as chromaticity units based on platinum cobalt standard solution. 1 PCU (Platinum Cobalt Colorimetric Unit)=1 degree=1 Hazen, but the customary names vary in different industries and standards, and the test results can be directly converted to be equivalent.

I’ll do it. Turbidity and chromaticity are two different markers and light scattering by suspended particles in turbid water samples might interfere with colorimetric results. Water samples should be allowed to settle or centrifuged before testing, and the supernatant to be obtained for measurement to eliminate interference from turbidity.

Drinking water 15 Celsius (platinum cobalt color); For centralized drinking water sources, the limit is 25 degrees Celsius; The discharge standards for industrial wastewater such as printing and dyeing, papermaking, etc., are different for each industry, generally between 50 and 200 degrees. For details, refer to the relevant industry discharge standards.

Desktop colorimeter optical path system is more accurate, detection accuracy and repeatability are more, suitable for laboratories to issue formal testing reports; DGB-421 portable is mainly used for on-site rapid screening, accuracy can meet the needs of field inspection and law enforcement preliminary judgment. For certification of a test report, it is recommended to use desktop equipment.

It can be reused. After each use, clean completely with pure water. Soak in dilute hydrochloric acid if necessary to remove persistent stains, then rinse with pure water and air dry. Be cautious not to scratch the optical surface of the colorimetric tube, otherwise it will affect the detection accuracy.

Water quality chromaticity is the fundamental sensory and safety indicator for water evaluation, which runs through multiple fields such as drinking water safety, industrial wastewater discharge, environmental monitoring, and production quality control.

The Sino Inst water quality chromaticity detection series is centered around the DGB-421 portable chromaticity analyzer, which meets the needs of rapid on-site screening and precise laboratory testing. The equipment is easy to operate, stable in data, and easy to carry, and can be fully adapted to various industries such as environmental protection, water affairs, printing and dyeing, chemical industry, food, scientific research, etc. It is a reliable analytical tool for routine water quality testing.

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