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Product details
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Technical indicators and related parameters
Extract water sample volume:50ml~1000ml
Extraction solvent volume:25ml~50ml
Extraction efficiency:95%the above
Repeatability:RSD<5%
Extraction time:2~4min/Sample (extraction time adjustable)
power waste:60VA
Overall dimensions:500mlextraction flask480mm×280mm×700mm
1000mlextraction flask480mm×280mm×820mm
Comparison with traditional extraction methods
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indicator |
Automatic extractor |
Manual extraction using a separating funnel |
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safety |
The operator does not directly come into contact with carbon tetrachloride, the extraction process is fully enclosed, and the exhaust pipe can be directly connected to the window or ventilated kitchen, ensuring high safety. |
The operator needs to open the piston exhaust of the separating funnel during the operation of the project, which results in poor safety due to human contact with carbon tetrachloride. |
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extraction efficiency |
The extraction solvent passes through the water sample every time and comes into full contact with it, resulting in high extraction efficiency. |
The relative extraction efficiency is low. |
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repetitiveness |
After setting the conditions, there is no need for manual intervention, pure mechanical operation, and good repeatability. |
The artificial influence is significant, the conditions are not constant, and the repeatability is relatively poor. |
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labor intensity |
Fully automated operation and the ability to extract multiple samples simultaneously, with low labor intensity. |
When the volume of water sample to be extracted is large or there are many samples, the labor intensity is high. |
Application field
Used for pre-treatment and extraction of oil in surface water, groundwater, domestic sewage, and industrial wastewater, and can also be used for other liquid extractions.
Technical Principle
According to“HJ637-2012When using the infrared photometric method to determine oil, it is necessary to extract the water sample. useUType tube will extract the bottleAandBConnected together, due to the higher specific gravity of the extraction solvent compared to water, it will be relatively fixed under the action of gravityUThe position of the tube, when the vacuum pump is extracted from the extraction bottleAWhen one end is evacuated, the water sample will be extracted from the extraction bottleBQuickly pass through the extraction solvent,Enter the extraction bottleAOn the contrary, when the vacuum pump is extracted from the extraction bottleBWhen one end is evacuated, the water sample will be extracted from the extraction bottleAQuickly pass through the extraction solvent and enter the extraction bottleBBy using a time relay to control the total extraction time and switch the extraction time, oil substances can be extracted from water.
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