QT-2504 COD speedy testing instrument (Include digestion instrument)

一、Principle of operation

QT-2504 COD speedy testing instrument uses the sealed digestion tube, a special oxidant of the amount of potassium dichromate has been applied to strong acid solution,in the presence of a catalyst, the water sample is digested at constant temperature 165℃, so that the reducing substance in water is oxidized,test the total absorbance of the un-reduced Cr6+ and the reduced Cr3+ at different wavelengths, or absorbance of the reduced Cr3+.

 二、 Technical Specification

三、Characteristics

 EPA approval method meets the HJ/T399-2007 standard, and the measurement way is accurate and effective.

The imported high brightness and long life cold light source,with excellent optical performance and light source life up to 100 thousand hours.

With 5 inches large LCD screen, Chinese menu ,data reading, simple operation, and time saving.

Digestion with colorimetry together, no need change tubes,simple, fast and security.

80 standard curves and 1800 measurement values can be saved.(include: date,time,spec and data)

With standard curve line, the user can also calibrate the curve as required.

One button recovery factory settings, you can quickly restore the error caused by misuse of the curve.

It has data storage and power-off data protection function, which is convenient for querying historical data and preventing data loss.

With USB interface, data can be transferred to the computer for permanent storage.

With printing function, you can print or query the measurement value immediately, and print the history record.

 The digestion instrument adopts intelligent PID temperature control technology and double anti over temperature protection system. The heating is safe and uniform, and speedy. The digestion for COD, total phosphorus, total nitrogen and so on.

 四、 Items list