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Conventional COD digesters / digesters mainly include: electric furnaces, water baths, electric hot plates, graphite digesters for hole digesters, heavy metal digesters, etc.
Electric furnaces are traditional digestion equipment in laboratories, which are simple and practical, but due to the limitations of laboratory technology.
Due to the requirements of innovation and laboratory management, the electric furnace belongs to the open flame equipment.
At the same time, it is difficult to control temperature and easy to damage, so that most laboratories now abandon this earliest COD digester/digester
.
The water bath is mainly used for some low-temperature digestion, such as sewage, cosmetics, etc.
The stability and safety of the water bath are higher than that of the electric furnace, and it is also more convenient to operate, but it is only suitable for some low-temperature digestion treatment, and the application field is limited
.
The electric hot plate is a kind of conventional digestion equipment that has been recognized and accepted by domestic laboratories in the past 10 years! No matter the large or small analytical laboratory, it is well controlled by its temperature, high stability and strong safety.
Impressed by the advantages! To a large extent, it helped the experimenters to solve some problems faced by the electric furnace digestion
.
According to statistics, the annual demand for electric heating plates in China is more than 12,000 pieces, and it is still increasing at a rate of 20% every year.
However, electric heating plates also have some disadvantages: high energy consumption, low thermal energy utilization rate, and small effective heating area.
, The amount of processed samples is limited, and the uniformity of experimental results is not strong
.
At present, in developed countries such as Europe and the United States, after innovation and innovation on the basis of electric hot plates, a device called pore digester has appeared, which heats the sample in a wrap-around heating method, effectively increasing the At the same time, it occupies the front end of conventional digestion equipment in Europe and America with the advantages of higher temperature control accuracy, small difference between holes, complete machine, energy saving and environmental protection.
The speed is 2-6 times faster than that of the electric hot plate, and the sample volume is 2-3 times that of the electric hot plate.
It can be said that it is a technological innovation of heating equipment
.
At present, domestic equipment manufacturers have also begun to develop and produce such products, and our laboratory technicians have also begun to recognize the advantages and value of such products
.
The current domestic demand for hole digesters is growing at a rate of 300% per year
.
Due to the purpose of energy saving and environmental protection advocated by the state, this will also be a direction for the future development of our laboratory.
We can predict that this type of product will completely replace the electric heating plate in the current laboratory as a new type of conventional heating and digestion equipment.
trend
.
The second is COD digester / digester, a new digestion technology developed and applied in the 1980s! Conventional heating digestion can only handle some simple samples, and some insoluble samples can only be processed under high pressure and airtight devices.
Complete digestion
.
This is the advantage of microwave digestion.
It can process almost all samples quickly and accurately.
In the past 5 years, microwave digestion in the domestic market has gradually expanded to the application fields of various industries! Especially in various provincial and municipal quality inspection centers, analysis Centers, etc.
have a high occupancy rate
.
This is a technical application field! It will become the most powerful sample preparation method for analysis and scientific researchers
.
At present, there are many wet digestion methods.
Different digestion equipment can be selected according to different samples, and different digestion methods can be formulated to achieve an accurate, fast inspection result
.
All COD digesters/digesters should be carried out in the following aspects: 1.
Avoid the loss of the components to be tested; 2.
Do not introduce interfering substances; 3.
Be safe and fast, and do not bring difficulties to the subsequent operation steps ; 4.
The solution obtained after digestion must be easy to detect
.
In this way, the above different digestion equipment and methods can be selected according to the experimental requirements!
Electric furnaces are traditional digestion equipment in laboratories, which are simple and practical, but due to the limitations of laboratory technology.
Due to the requirements of innovation and laboratory management, the electric furnace belongs to the open flame equipment.
At the same time, it is difficult to control temperature and easy to damage, so that most laboratories now abandon this earliest COD digester/digester
.
The water bath is mainly used for some low-temperature digestion, such as sewage, cosmetics, etc.
The stability and safety of the water bath are higher than that of the electric furnace, and it is also more convenient to operate, but it is only suitable for some low-temperature digestion treatment, and the application field is limited
.
The electric hot plate is a kind of conventional digestion equipment that has been recognized and accepted by domestic laboratories in the past 10 years! No matter the large or small analytical laboratory, it is well controlled by its temperature, high stability and strong safety.
Impressed by the advantages! To a large extent, it helped the experimenters to solve some problems faced by the electric furnace digestion
.
According to statistics, the annual demand for electric heating plates in China is more than 12,000 pieces, and it is still increasing at a rate of 20% every year.
However, electric heating plates also have some disadvantages: high energy consumption, low thermal energy utilization rate, and small effective heating area.
, The amount of processed samples is limited, and the uniformity of experimental results is not strong
.
At present, in developed countries such as Europe and the United States, after innovation and innovation on the basis of electric hot plates, a device called pore digester has appeared, which heats the sample in a wrap-around heating method, effectively increasing the At the same time, it occupies the front end of conventional digestion equipment in Europe and America with the advantages of higher temperature control accuracy, small difference between holes, complete machine, energy saving and environmental protection.
The speed is 2-6 times faster than that of the electric hot plate, and the sample volume is 2-3 times that of the electric hot plate.
It can be said that it is a technological innovation of heating equipment
.
At present, domestic equipment manufacturers have also begun to develop and produce such products, and our laboratory technicians have also begun to recognize the advantages and value of such products
.
The current domestic demand for hole digesters is growing at a rate of 300% per year
.
Due to the purpose of energy saving and environmental protection advocated by the state, this will also be a direction for the future development of our laboratory.
We can predict that this type of product will completely replace the electric heating plate in the current laboratory as a new type of conventional heating and digestion equipment.
trend
.
The second is COD digester / digester, a new digestion technology developed and applied in the 1980s! Conventional heating digestion can only handle some simple samples, and some insoluble samples can only be processed under high pressure and airtight devices.
Complete digestion
.
This is the advantage of microwave digestion.
It can process almost all samples quickly and accurately.
In the past 5 years, microwave digestion in the domestic market has gradually expanded to the application fields of various industries! Especially in various provincial and municipal quality inspection centers, analysis Centers, etc.
have a high occupancy rate
.
This is a technical application field! It will become the most powerful sample preparation method for analysis and scientific researchers
.
At present, there are many wet digestion methods.
Different digestion equipment can be selected according to different samples, and different digestion methods can be formulated to achieve an accurate, fast inspection result
.
All COD digesters/digesters should be carried out in the following aspects: 1.
Avoid the loss of the components to be tested; 2.
Do not introduce interfering substances; 3.
Be safe and fast, and do not bring difficulties to the subsequent operation steps ; 4.
The solution obtained after digestion must be easy to detect
.
In this way, the above different digestion equipment and methods can be selected according to the experimental requirements!
