Chemicals Oxygen Demand Apparatus for Water Testing Lab

Chemicals Oxygen Demand Apparatus for Water Testing Lab

The COD stands out for its dual-range measurement and interference-free optical system, making this chemical oxygen demand apparatus essential for environmental labs and wastewater treatment plants. This chemical oxygen demand apparatus, the COD, is a professional water quality testing instrument designed for rapid and accurate COD measurement in surface water, wastewater and industrial effluents. Equipped with a self-calibration function and large data storage, the COD ensures consistent performance, solidifying its role as a trusted chemical oxygen demand apparatus for water quality assessment.

Features

Measure high-range and low-range COD water samples, supporting both dish and tube colorimetry;

Independent dual-path, interference-free system for direct concentration reading, high accuracy, long life, and enhanced stability;

Rapidly and accurately measure COD in surface water, reclaimed water, municipal sewage, and industrial wastewater;

Built-in infrared and USB dual data transmission interfaces for data transfer via a computer cable or long-distance infrared connection;

Built-in printer for printing current data and all stored historical data;

Utilizing a self-designed non-metallic housing, the instrument is aesthetically pleasing;

Intuitive menu navigation and a 3.5-inch color LCD screen with user-friendly operation prompts make it easier to use;

The instrument features a self-calibration function that calculates and stores curves based on standard samples, eliminating the need for manual curve creation;

Flexible switching between large and small font display modes for clearer data display and more detailed parameters;

Supports historical data storage and viewing, capable of storing 12,000 data records;

Host Parameters

Measurement Range  (20~10000) mg/L (segmented)           (2~150)mg/L

COD concentration ≤ 500 mg/L, error ≤ ±8% Error ≤ ±8%

Minimum Detection Limit      0.1mg/L

Indication Error           COD concentration > 50 mg/L, error ≤ ±5%;

Chlorine Interference Resistance        [CL-]?1000mg/L (no effect) [CL-]?4000mg/L (optional)

Light Source Lifetime  100,000 hours

Power Supply  220V

Data Storage    12,000

Repeatability   ≤±3%

Stability           ?0.005A/20min

Batch Sample Processing        16 water samples

Measurement Time    20 minutes

Number of Curves       180 bars

Digestion instrument parameters

Display Mode  Color LCD (320*240 resolution)

Data Communication Port      USB/Infrared (optional)

Colorimetric Method  Cuvettes and tubes

Digestion temperature            165°C ± 0.5°C

Digestion time 10/15 minutes (optional)

Digestion time error   ≤ ±2°C

Timing range   1 minute - 96 hours

Timer switches            3

Timing accuracy          0.2 seconds/hour

Temperature indication error ≤ ±2°C

Temperature field uniformity ≤ 2°C

Power supply   AC220V ±10%/50Hz