COD rapid detection analyzer

1、 Instrument Introduction

DS-200 type

COD rapid detection analyzerThe rapid catalytic method (chromium method) is used, and the water sample is heated and digested with a special reagent to produce trivalent chromium ions through oxidation-reduction. The COD value is calculated by colorimetric analysis using spectrophotometry. The design performance of the product meets the requirements of the national environmental protection industry standard "HJ/T399-2007 Determination of Chemical Oxygen Demand in Water Quality - Rapid Digestion spectrophotometric method", and can be widely used for the detection of wastewater in various industries (industrial wastewater, urban sewage, domestic sewage, and surface water in rivers and lakes).
COD rapid detection analyzerThere have been significant improvements in terms of stability, accuracy, measurement range, and practicality. Multiple options can meet the diverse needs of different users.

2、 Main functions:

1. Chinese operation interface, large screen guidance menu LCD display;

2. The central wavelength is 610nm;

3. Can directly measure COD and has printing function;

4. Multiple standard curves in memory can be manually set, modified, and saved data;

5. The curve can be automatically calculated and established using national standard samples;

6. Equipped with full screen page flipping/viewing/modifying/saving functions;

7. Equipped with automatic protection function in case of temperature control exceeding the limit, the power can be adjusted according to the load;

8. Having the ability to select the required parameters based on the preset memory working line;

9. It has the function of flashing and sounding when the current temperature/timing parameters are reached;

10. It has the function of modifying and saving pre-set temperature/timing parameters.

3、 Technical parameters:

1. Measurement method: Rapid catalytic method (chromium method);

2. Measurement range: 5-2500 mg/L (diluted measurement when>1000 mg/L);

3、 测量误差： 5~100 mg/L， 误差≤ ±5 mg/L； 100 mg/L~5000 mg/L， 相对误差≤±5 %

4. Dissolving temperature: 165 ± 1 ℃;

5. Dissolving time: 10 minutes;

7. Dissolved sample quantity: 12 pieces/batch (standard) (optional 9/25 wells)

6. Measurement time: Simultaneously measure 12 water samples within 30 minutes;

7、 抗氯干扰： [CL-] ＜1000mg/ L； [CL-] ＜4000mg/ L（可选配）；

8. Temperature indication error ＜ ± 1 ℃;

9. Temperature field uniformity ≤ 2 ℃;

10. The error of the digestion time indication is ≤± 2%;

11. Curve parameters: Built in 50 curves;

12. Record storage: capable of storing 500 measurement results;

4、 Performance indicators:

1. Environmental temperature: (5~40) ℃;

2. Environmental humidity: relative humidity<85% (no condensation);

3. Working power supply: AC220V ± 10%/50Hz;

4. Dimensions: 320 * 240 * 110mm

5、 Product selection:

6、 Standard configuration:

1 COD host

消解器 1台（标配12孔）

1 box of colorimetric dishes (4 pieces)

1 colorimetric dish rack

12 digestion tubes

1 test tube rack

1 set of reagents (200 times)