1、 Product Introduction
The DS-200D model can accurately and quickly quantify COD indicators, and is suitable for detecting general environmental water samples such as surface water and groundwater, as well as various water bodies such as moderately and mildly polluted wastewater. It can be applied to environmental monitoring stations, sewage treatment plants, colleges and universities, research institutes, petrochemicals, papermaking, printing and dyeing, electronics, electricity, steel, agriculture, municipal engineering and other industries.

2、 Product parameters
1. Measurement mode: concentration, absorbance, transmittance
2. Light source: using high brightness light-emitting diodes
3. Photocurrent stability: ≤± 1% T/3min
4. Transmittance accuracy: ≤± 1.5% T
5. Transmission density repeatability: ≤ 0.5% T
6. Power supply: AC power supply: 220V, 50/60Hz
7. Specification and dimensions: 310mm × 290mm × 140mm
8. Weight: 2.9kg

3、 Product Features
1. The instrument has a fully plastic casing with a streamlined design and a specially treated surface material that is resistant to oxidation, acid, and alkali.
2. Large screen LCD protective screen, made of tempered glass, scratch resistant, clear screen, user-friendly interface, and intuitive reading.
3. Adopting silicone buttons with a lifespan of up to 500000 times, it has the characteristics of waterproof, dustproof, anti-static, washable, disinfectable, antibacterial, noiseless use, and fast operation response speed.
4. The new optical path structure adopts two technologies simultaneously, which enables this product to have superior optical performance, high measurement accuracy, and long-term instrument stability.
5. The light source adopts light-emitting diodes, which have the advantages of energy saving, environmental protection, long service life, and fast response speed;.
6. The instrument colorimetric dish slot is suitable for use with a diameter of 16mm circular colorimetric tube or 10mm/20mm/30mm/50mm optical path colorimetric dish, and is flexible to use.
7. Large capacity memory, capable of measuring multiple detection items and automatically storing measurement results, can store multiple sets of detection data, and can perform operations such as viewing, printing, and deleting measurement data at any time;
8. The instrument is equipped with a built-in micro printer, which can print and store measurement data in real-time or at any time according to the detection date or detection number;
9. The internal microprocessor can perform self diagnosis on power supply, circuits, light sources, etc.
10. The instrument is equipped with RS-232 interface and USB interface, which can collect data to a personal computer through the "monitoring system client program", realizing functions such as data statistical analysis, storage, uploading, exporting to Excel, and automatic generation and printing of reports.
Equipped with a car power interface, it is convenient for users to use for equipment such as mobile detection vehicles.
▲ Special reagents for quantitative packaging, complete accessory configuration, and an aesthetically pleasing and durable toolbox, making it convenient for users to operate in fixed or mobile laboratories.