The soxhlet extractor, also known as a fat analyzer, is a commonly used solid-liquid extraction instrument in laboratories. It efficiently extracts lipids from solid materials. Drawell’s Soxhlet extractors are made of high-quality materials, are easy to operate, and produce stable results. They are widely used in laboratories, the chemical industry, the pharmaceutical industry, the food industry, environmental monitoring, the oil and energy industry, and agriculture.

Soxhlet vs. Fat Analyzer – What’s the Difference?

Soxhlet Extractor: Traditional manual setup, requires heating, solvent addition, and sample handling.

Fat Analyzer: Automated, faster, safer, and more efficient version of Soxhlet extraction, often with temperature control and solvent recycling.

Which Industries Use Soxhlet Extractor and Fat Analyzer?

• Food Industry: Measuring fat in dairy, meat, chocolate, oils, etc.
• Feed Industry: Determining fat content in animal feed and grains.
• Agriculture: Analyzing oil seeds and crops.
• Environmental Science: Extracting pollutants, pesticides, or hydrocarbons from soil and water samples.
• Petroleum and Energy Industry: Extracting and analyzing volatile organic compounds (VOCs) such as benzene, toluene, and xylene from petroleum and crude oil.
• Pharmaceutical Industry: Extracting and separating active ingredients from pharmaceuticals to ensure their purity.

What Other Instruments are Needed for Fat Analysis?

1. Fat analyzer / soxhlet extractor and tools
2. Analytical balance: sensitivity 0.0001g
3. Constant Temperature Drying oven
4. Crusher and mortar for laboratory use
5. Drying oven with allochroic silicagel
6. Absorbent cotton, wide neck flask, absorbent yarn, absorbent thread
7. Filter-paper barrel

How to Operate Soxhlet Extraction Apparatus?

1. Sample

• For low-fat samples (like cereal and feed), grind and accurately weigh, place between absorbent cotton layers in a filter-paper barrel, and prepare for extraction.
• For high-fat oil seeds, bake, grind with absorbent yarn until oily but not sticky, transfer with absorbent cotton (wiping residues with ether), and load into the filter-paper barrel for extraction.

2. Infuse 80-340ml absolute ether into extraction bottle, then ring extractor with the bottle and place them on water bath, adjust to keep good touch, the cock handle should be turned vertically.
3. Switch on the apparatus, adjust heating temperature according to needs, the display panel will show the value.
4. When recovering the solvents, just turn the cock handle horizontally.
5. After recovering ether, raise the condensation tube to separate extraction bottle and water bath, place the bottle within a thermostat, dry it then move into drying cylinder for cooling, weigh the analyte and calculate oil content.
6. After operating, turn off the power, rub all necessary parts and keep clean.

Precautions and Common Malfunctions of Soxhlet Extraction Apparatus

1. Take two groups of water hoses for cooling is a must, to prevent ether from volatilization.
2. Set up extraction and heating temperatures in accordance with room temperature.
3. If use water bath to heat, distilled water must be poured into in advance, to protect heating tube from being broken, also for this reason, please notice water level when extracting, add distilled water in time when water level is low.
4. Under conditions of complying with regulations for transportation, storage, installation and usage, if the apparatus malfunctions for sake of manufacturing reasons within one year from the day of receiving, or when opening packing box, there are shortage, broken places because of bad package, accessories not in compliance with packing list, please contact with our quality inspection dept..

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