1、 Instrument Introduction:

►bod(Biochemical Oxygen Demand, BOD)As one of the most commonly used and important indicators and detection parameters for organic pollution in water quality internationally, its traditional method is five-day biochemical oxygen demand(BOD5)The standard dilution method is still a commonly used analytical and testing method both domestically and internationally, but it requires5The analysis cycle is time-consuming and cumbersome, which brings a lot of inconvenience to sewage treatment and environmental monitoring. The vast number of technological personnel urgently need a rapid and accurate measuring instrument that can replace traditional methods5Daily training method to improve work efficiency and reduce labor intensity.

►50AtypeBODThe rapid measuring instrument is in 50typeBODThe upgraded product based on the rapid testing instrument has faster detection speed, simpler operation mode, shortened microbial membrane cultivation time, and further improved the detection accuracy of the product.50AtypeBODThe rapid measuring instrument adopts microbial electrode method, which can quickly determine the content of water in water samplesBODValue, and easy to operate, accurate measurement. The principle is based on the oxygen consumption metabolism of organic matter by microorganisms, which is measuredBODIt only involves the initial oxidation rate, so it can be used in5-8Complete the measurement of a sample within minutes. Greatly reducing the time required for measurement. This method complies with the "Biochemical Oxygen Demand for Water Quality（BOD）Rapid Measurement Method for Microbial Sensors（HJ/T86-2002）, in2002The fourth edition of "Water and Wastewater Detection and Analysis Methods" published and distributed in the year is listed asAClass method.

►Principle: The instrument adopts the microbial electrode method, which tightly adheres the microbial membrane to the surface of the oxygen permeable membrane of the polarographic dissolved oxygen electrode, thus forming the microbial electrode. The instrument adopts a flow measurement method, which means that the sample flows through the microbial electrode. The microbial membrane contains a large number of aerobic microorganisms, which are very active in aerobic and organic environments. The output current of the oxygen electrode is proportional to the concentration of dissolved oxygen. When a liquid without organic matter passes through the flow cell, the dissolved oxygen passing through the microbial membrane hardly decreases. When a solution containing organic matter passes through a circulation pool, microorganisms consume a large amount of dissolved oxygen, which is proportional to the concentration of organic matter, resulting in a corresponding decrease in dissolved oxygen passing through the microbial membrane. The dissolved oxygen electrode measures the change in dissolved oxygen concentration and calculates it accordinglyBODValue.

2、 Product Usage:

BODThe rapid measuring instrument adopts microbial electrode method, which can quickly determine the content of water in water samplesBODValue, and easy to operate, accurate measurement, fast measurement speed, suitable for determining surface water, domestic sewage, and industrial wastewater that does not contain significant toxic effects on microorganisms Biochemical Oxygen Demand（BOD）.

3、 Main features:

1Advanced principle: using microbial electrode method

2Accurate results: Strong comparability with the five-day method

3Easy to operate: microcomputer control, intelligent measurement

4Measurement time:5-8Complete a sample measurement in minutes

5Easy maintenance: only need to regularly replace the biofilm and infusion tube

6The water sample does not require pre-treatment and has strong anti-interference ability

7High safety: The strains used are harmless to the human body

8High reliability: simple structure, no vulnerable components, long lifespan

9Data processing: capable of storing experimental data with RS232 data interface

10Printing function: Equipped with a micro printer to print and output measurement results.

4、 Execution standards:

HJ/T 86-2002The Water Quality Biochemical Oxygen Demand（BOD）The determination Rapid Measurement Method for Microbial Sensors

5、 Technical indicators:

1Measurement range:2—50 mg/L(The highest dilution can be measured)5000mg/L）

2Repeatability:≤ 5%

3Accuracy:≤±5%

4Resolution:0.1 mg/L

5One sample testing time:5-8minute

6Injection method: Constant current continuous injection

7Buffer solution consumption:5ml/min

8Required sample volume: required for each measurement50ml

9Environmental temperature:（5—40）℃

10Relative humidity:≤90%RH

11, Gong Rate:100W

12Electricity Source:AC220V 50Hz

13External dimensions:（560× 360× 210）mm

14Heavy Quantity:16kg(Instrument with packaging)20Kg）

6、 Product configuration

1Host 1tower

2Peristaltic pump 1tower

3Electrode 1branch

4Microbial membrane 10Zhang（2-3Change on the first day of the month

5、Teflonfilm 5Zhang (changed every six months)

6、PVCLiquid tube 20Root (changed once a month)

7Power cord 1root

8Instruction manual 1share

9Certificate of Conformity 1share

10Warranty card 1share