Shenzhen Qingshijie Q-CL501 portable residual chlorine and chlorine dioxide five parameter rapid detector, a detection instrument that can simultaneously detect residual chlorine, total chlorine, compound chlorine, chlorine dioxide, and chlorite. This instrument is based on DPD spectrophotometry for detection and meets the requirements of GB/T 5750.11-2006 and the 20th edition of the American "Water and Wastewater Standard Test Method".

The Shenzhen Qingshijie Q-CL501 portable residual chlorine and chlorine dioxide five parameter rapid detector is suitable for the determination of free chlorine, compound chlorine, total chlorine, as well as residual chlorine dioxide and chlorite in drinking water and wastewater. It can be widely used for on-site rapid water quality testing or laboratory standard testing in urban water supply, food and beverage, environment, medical, chemical, pharmaceutical, thermoelectric, papermaking, aquaculture, biotechnology, fermentation technology, textile printing and dyeing, petrochemical, water treatment and other fields.

Features
The S-CL501 portable residual chlorine and chlorine dioxide five parameter rapid analyzer is based on the principle of DPD spectrophotometry and the implementation of the "Sanitary Standards for Drinking Water" GB5749-2006. It uses the latest technology from the United States to produce core components and is used to detect free chlorine, compound chlorine, total chlorine, free chlorine dioxide, and chlorite. It is the latest water quality analysis instrument that is compatible with the "Standard Inspection Method for Drinking Water" GB/T5750-2006.
1. It is a residual chlorine analyzer that can quickly detect chlorite salts;
2. It is a residual chlorine analyzer that is consistent with the new national standard method for residual chlorine;
3. It is a versatile analyzer capable of detecting both chlorine and chlorine dioxide disinfectants;
4. It can quickly and accurately complete free chlorine, compound chlorine, total chlorine, free chlorine dioxide, and sub chlorine dioxide within 10 minutes
High tech testing of all 5 items including chlorate and obtaining resultsWater Quality Analyzer；
5. It is a portable analyzer that can be used for on-site water quality testing.

Technical Specifications
Test item: Residual chlorine, total chlorine, chlorine dioxide, chlorite
Detection method: DPD spectrophotometric method Light source: Light emitting diode (LED)
Detector: Silicon photodiode measuring instrument Reading division: 0.01 mg/L
Range: residual chlorine 0.01~5.00mg/L; Chlorine dioxide concentration is 0.02-10.00mg/L;
Hypochlorite 0.00~2.00mg/L
Precision: ≤ 3% ± 0.01 Instrument size: 16 × 6.2 × 3cm
Weight: 0.15 kg Color comparison bottle: Height 8cm (Capacity 25ml)
Working environment: 0-50 ℃ Relative humidity: 0-90%
Power supply: 2 AA alkaline batteries

Scope of application
Widely used for on-site rapid water quality testing or laboratory standard testing in urban water supply, food and beverage, environment, medical, chemical, pharmaceutical, thermoelectric, papermaking, aquaculture, bioengineering, fermentation technology, textile printing and dyeing, petrochemical, water treatment and other fields.