Overview
HI97779 Chlorine Dioxide [DPD Method] Portable Photometer is an instrument used for the measurement of chlorine dioxide (ClO2) content in water. Chlorine dioxide is a strong oxidation agent, commonly used in water treatment and disinfection process, can effectively kill bacteria, viruses and microorganisms, remove odor and color, widely used in drinking water treatment, swimming pool disinfection and industrial fields to ensure water quality safety. The instrument meets IP67 waterproof standard, adopts innovative Optical inspection system design, with good accuracy and repeatability, CAL CheckTM function supports NIST traceability standard verification and calibrate, built-in reaction Timer, GLP display, battery status indication and automatic shutdown function.
Features
1. LED high quality Illuminant system, providing good performance and high luminous efficiency
2. High-quality Optical inspection filter to ensure measurement Stability and less wavelength error, improve accuracy and accuracy
3. Unique reference detector for fast and stable reading between blank (zero) measurement and sample measurement
4. Stable Illuminant Settings to Reduce Errors and Reading Offsets Caused by Glass Colorimetric Cup Defects
5. CAL CheckTM feature that allows performance verification and calibrating using NIST traceability standards
6. Built-in Reaction Timer to ensure that sample measurements are consistent with user results
7. Good Laboratory Practice (GLP) shows the date and time after the user calibrates the record
8. Battery status indicator and automatic shutdown settings to improve ease of use
Principle
The HI97779 photometer is based on the DPD method for the measurement of chlorine dioxide content in water. The sample is irradiated at a wavelength of 525nm by LED Illuminant. Absorbance changes are detected using silicon Illuminant and Optical inspection filters to calculate chlorine dioxide concentration. The unique reference detector ensures stable readings, and the stable Illuminant setting reduces Colorimetric cup errors for fast and accurate measurement.
Applications
Drinking water treatment, swimming pool disinfection, industrial production
Standards
IP67 waterproof standard, method standard 4500 ClO2 D
Steps
1. Prepare the sample and load it into the reaction cup
2. Instrument validation and calibrating using CAL CheckTM function (optional)
3. Start measurement, built-in reaction Timer automatic timing
4. Read the measurement results on the display
The instrument automatically stores the last 50 measurements
Notice
• Ensure that the instrument is used at 0 to 50 ° C Ambient Temperature
• To avoid long-term no operation, the instrument will automatically shut down after 15 minutes
• Check the battery status before use to ensure sufficient power
• Pay attention to the date and time information displayed by GLP after calibrating
• Keep Colorimetric Cups clean to reduce measurement errors
