Hash DR300 residual chlorine detector portable colorimeter for water quality analysis of swimming pools in water plants

Description :

  The Hash DR300 residual chlorine detector is a portable photometer designed specifically for rapid on-site water quality analysis. It mainly solves the problems of large reading errors in traditional visual colorimetric methods, strong interference from environmental light, and cumbersome operation of old equipment. This device is suitable for water quality monitoring in waterworks, sewage treatment plants, swimming pools, cooling towers, and the food and beverage industry. It can accurately measure the free chlorine and total chlorine content in water samples. As a classic entry-level model under the Hash brand, the Hash DR300 residual chlorine detector, with its stable optical system and simple operation logic, has become an ideal tool to replace old detection methods and improve on-site inspection efficiency, ensuring that water quality data meets hygiene and safety standards.

  In terms of specifications and processes, the Hash DR300 residual chlorine detector adopts Hash's patented optical system design, with built-in LED light sources of specific wavelengths to ensure the repeatability and accuracy of measurement results. The equipment is usually equipped with pre programmed standard curves, and users can directly read concentration values without manual calibration, supporting display in mg/L (ppm) units. The shell design emphasizes durability and has an IP67 protection level, which can adapt to humid and dusty industrial site environments. The battery has strong endurance and can support hundreds of tests after a single charge or battery replacement. This device complies with multiple international water quality testing standards and undergoes strict optical accuracy testing and environmental adaptability verification before leaving the factory, ensuring that each Hash DR300 residual chlorine detector can maintain stable performance under complex working conditions.

  When selecting, it is necessary to clarify the detection requirements. The Hash DR300 residual chlorine detector is mainly designed for low range residual chlorine detection and is suitable for daily monitoring of conventional drinking water and swimming pool water. If high concentration chlorine dioxide, ozone, or other multi parameter indicators need to be detected, other high-end models such as DR900 or multi parameter analyzers from Hash should be selected. Compared with traditional DPD visual colorimetric tubes, the Hash DR300 residual chlorine detector eliminates human color judgment errors and provides more objective data; Compared with desktop laboratory spectrophotometers, its advantages lie in portability and real-time on-site results. For users who only need regular sampling of residual chlorine and have limited budget, this model has extremely high cost-effectiveness; But for scenarios that require real-time online monitoring or minimal detection, it is recommended to consider online analyzers or higher precision laboratory equipment.

  In terms of usage and maintenance, installing the Hash DR300 residual chlorine detector does not require complex debugging, and can be used after opening the box and installing the battery. In daily operation, attention should be paid to the cleanliness of the colorimetric dish to avoid scratches that affect the transmittance. It is recommended to use a specialized wiping cloth for treatment. Reagents should be selected from DPD powder pillows or ampoules provided by Hash factory to ensure complete reaction and stable color development. Common faults are often abnormal readings, usually caused by stains on the outer wall of the colorimetric dish, incomplete removal of bubbles, or expired reagents. When troubleshooting, priority should be given to checking the sample preparation process. Regularly using standard solutions for verification can confirm the status of the instrument. Properly stored in a dry place, avoiding direct exposure to high temperatures, can extend the service life of the Hash DR300 residual chlorine detector and maintain measurement accuracy.

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