How does soxhlet extractor works
We sell Soxhlet extractors. The Soxhlet extractor uses the principle of solvent reflux and siphon to continuously extract the required components in the solid mixture.
When the liquid level of the solvent under reflux in the extraction cylinder exceeds the siphon of the Soxhlet extractor, the solvent in the extraction cylinder flows back into the round-bottomed flask, and siphon occurs. As the temperature rises, the reflux starts again. Before each siphon, the solid matter The extraction solvent can be reused by the pure hot solvent, shortening the extraction time, so the extraction efficiency is higher.
When extracting, wrap the test sample in a defatted filter paper bag and put it into the extraction tube. Petroleum ether is added to the extraction bottle, the extraction bottle is heated, the petroleum ether is vaporized, and it rises from the connecting pipe into the condenser, and the condensed liquid drops into the extraction pipe to extract the similar substances in the sample. When the petroleum ether liquid level in the extraction tube reaches a certain height, the petroleum ether dissolved with crude fat flows into the extraction bottle through the siphon tube. The petroleum ether flowing into the extraction bottle continues to be heated and vaporized, rises, cold, and drips into the extraction tube, and so on, until the extraction is complete.
How does soxhlet extractor works
Soxhlet extractor, also known as fat extractor or fat extractor. The Soxhlet extractor is composed of an extraction bottle, an extraction tube, and a condenser. There are siphons and connecting pipes on both sides of the extraction tube. The connections of each part must be tight and not leaky. When extracting, wrap the sample to be tested in a defatted filter paper bag and put it into the extraction tube. Petroleum ether is added to the extraction bottle, the extraction bottle is heated, the petroleum ether is vaporized, and it rises from the connecting pipe into the condenser, and the condensed liquid drops into the extraction pipe to extract the lipids in the sample. When the petroleum ether liquid level in the extraction tube reaches a certain height, the petroleum ether dissolved in crude fat flows into the extraction bottle through the siphon. The petroleum ether flowing into the extraction bottle continues to be heated to vaporize, rise, condense, and drip into the extraction tube, and so on, until the extraction is complete.
Main features of Soxhlet extractor
1. Heating extraction, solvent recovery and cooling are three major components;
2. The heating temperature can be adjusted according to the boiling point of the reagent and the environmental temperature during operation;
3. The sample of the fat analyzer is soaked and extracted repeatedly during the extraction process, so as to achieve the purpose of rapid extraction;
4. The solvent can be recovered automatically, which greatly facilitates the use of users and saves a lot of time;
5. The extraction time is adjustable, and an alarm will be issued when the time is reached.
Preparation for Soxhlet extractor operation
1. Sample preparation: (The sample rule is based on the net thousand, and the quarter method is required to sample evenly when sampling.) Cereals: grains and beans (except peanuts> take out 30-50g of dry samples to remove impurities , Grind through a round hole sieve with a diameter of 1.0m, and put it into a jar for later use. Small grain oils: such as sesame, rapeseed, etc., take out about 20g of the clean and dry sample from impurities, and put it into a jar for use.
2. Large-grain oils: such as peanuts, castor seeds, sunflower seeds, etc., take 30~50g of the net dry sample, peel off the shells one by one, weigh the kernel shells separately, calculate the percentage of kernel weight, and then slice into a jar for later use .
3. Wash the extraction bottle with distilled water until there is no impurities left in the cylinder. Place it in a drying oven for about 1 hour (G temperature is 105°C), take out the serial number, weigh it and move it into a desiccator to cool for later use.
4. Put the cylindrical filter paper bucket into the filter paper bucket holder. (Note that the upper mouth of the filter paper should not be higher than the inner groove of the filter paper bucket rack)
5. Check whether the power supply is in good condition and whether the water source is connected securely.
6. Turn on the power switch, set the temperature of the temperature controller and the temperature adjustment knob, and preheat for 15 minutes.
