11th Floor, Building A3, Tengjieshun Technology Park, No. 2 Shihuan Road, Shiyan Town, Bao'an District, Shenzhen

TR-108 COD rapid analyzer

Detection principle:

The TR-108 COD analyzer from Tongao brand uses a closed digestion tube for closed digestion. In a strong acidic solution, a special oxidant containing a certain amount of potassium dichromate is used to digest the water sample at a constant temperature of 165 ℃ under the action of a catalyst, so that the reducing substances in the water are oxidized. The total absorbance of the unreduced Cr6+and reduced Cr3+in the water is measured at different wavelengths, or the absorbance of the reduced Cr3+is measured.

Technical parameters:

measuring method	HJ/T399-2007 "Determination of Chemical Oxygen Demand in Water Quality - Rapid Digestion Spectrometric Method"
Measurement range	0-10000 mg/L (segmented measurement)
limit of detection	5mg/ L
Dissolving temperature	165℃，15min
Anti chlorine interference	1000mg/L
resolution	0.001mg/L
accuracy	COD value>50mg/L, indication error not exceeding 5%
repeatability	The relative standard deviation shall not exceed 3%
Optical stability	≤ 0.001A/20 minutes
Instrument dimensions	310mm230mm150mm
Instrument power supply	AC(220V±10%)，50Hz
ambient temperature	5~40℃
ambient humidity	≤ 85% non condensing
Instrument weight	Host<3kg, disintegrator 6kg

Product features:

1. Developed and designed according to HJ/T399-2007 standard, the measurement results are accurate and effective.
2. Adopting imported high brightness and long-life cold light source with excellent optical performance, the light source has a lifespan of up to 100000 hours.
3. Large LCD screen with full Chinese display, direct data reading, simple and time-saving operation.
4. Dissolve colorimetric integrated, no need to replace tube, simple and fast measurement, no safety hazards.
5. Can save 80 standard curves and 1800 measured values (date, time, parameters, test data).
6. The memory standard working curve, and users can also calibrate the curve as needed.
7. One click factory reset allows for quick recovery in case of curve loss due to misoperation.
8. It has the function of curve coverage interference to prevent accidental operation of covering curves.
9. It has data storage function and data power-off protection function, making it convenient to query historical measurement data and prevent data loss.
10. Equipped with a USB interface, data can be transferred to the computer for permanent storage.
11. It has a printing function and can print the measured values immediately or query the historical records for printing.
12. The digestion instrument adopts intelligent PID temperature control technology and a dual anti overheating protection system, ensuring safe and uniform heating with fast speed. Used for the digestion of COD, total phosphorus, total nitrogen and other projects.

Standard equipment list:

TR-108 COD analyzer standard configuration list

Serial number	Name	quantity	Serial Number	Name	number
1	Printing type testing host	1 unit	8	Color tube cleaning cloth	1 piece
2	16 hole intelligent digestion instrument	1 unit	9	power cord	2 pieces
3	Dissolve the protective cover	1 piece	10	USB data cable	1 piece
4	COD determination reagent	1 set	11	Online CD	1 sheet
5	standard solution	1 set	12	Operation flowchart	1 copy
6	Dissolving colorimetric integrated tube	10 pieces	13	operation instructions	1 copy
7	Colorimetric tube cooling rack	1 piece	14	Certificate of Conformity/Warranty Card	1 copy

Qualifications related to COD rapid analyzer:

COD氨氮总磷总氮软件认证证书多通道水质分析仪软件认证证书计量研究院COD测定仪检测报告国家高新技术计量站校准报告

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