DS-50A BOD rapid measuring instrument

Product Description
1. Introduction to the instrument
Type D rapid tester is an instrument specially designed by our company for various monitoring and laboratory personnel to measure the biochemical oxygen demand of various water samples. Biochemical oxygen demand (biochemical oxygen demand) DdD) is one of the most commonly used and important water quality organic pollution indicators and detection parameters in the world. This product has the advantages of rapid and accurate measurement and is suitable for measuring D in surface water, domestic sewage, and industrial wastewater.
2. Main features
, The principle adopts advanced microbial electrode method
The results are accurate and highly comparable to the five-day method
Simple operation, microcomputer controlled intelligent measurement
> , The measurement time is as short as a few minutes to complete a sample measurement
, Simple maintenance only requires regular replacement of microbial membranes and infusion tubes
, Water samples do not require pre-treatment, strong anti-interference ability
, High safety bacteria used Harmless to the human body
, high reliability, simple structure, no vulnerable components, long life
, printing function equipped with micro printer to print out measurement results
3. Technical indicators
d measurement range / (Maximum measurable/)
d Repeatability%
d One-time sampling time in minutes
d Injection mode constant flow continuous injection
d Buffer solution consumption/
dRequired sample volume for each measurement
dAmbient temperature ℃
dRelative humidity %
dPower
dPower supply
dExternal dimensions ( )
d weight
d implementation standard: / - "Determination of water quality biochemical oxygen demand (D) rapid determination method of microbial sensor"
4. Measurement principle
The instrument uses the microbial electrode method to separate the microbial film The microbial electrode is formed on the surface of the oxygen permeable membrane close to the polarographic dissolved oxygen electrode. The instrument adopts the flow measurement method, that is, the sample flows through the microbial electrode. The microbial membrane contains a large number of aerobic microorganisms that are very active in an aerobic and organic environment. The output current of the oxygen electrode is proportional to the concentration of dissolved oxygen. Liquid without organic matter passes through the flow. There is almost no reduction in dissolved oxygen passing through the microbial membrane in the pool. When a solution containing organic matter passes through the flow cell, the microorganisms consume a large amount of dissolved oxygen. The dissolved oxygen consumed 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 the value.
5. Physical display