behr E 1, E 4, E 6
Food analysis › Oil & fat analysis › Beverage industry › Feed analysis › Agricultural industry › Environmental analysis › Chemicals & plastics industry › Cosmetics industry › Pharmaceuticals industry › R&D laboratories
Extractable components › Extract content › Fat › Free fat › Oil content › Residual resin › Bound fat › Non fat › Caffeine › Теин › Fiber › Non-extractable component
Beans › Fish and fish products › Meat and meat products › Feed › Feed and raw materials › Shrimps › Coffee › Cocoa and cocoa products › Plastics › Liver › Almonds › Marzipan › Milk and milk products › Nutrition › Oilseeds › Olives › Mustard seeds › Sweets › Tea › Textiles › Cellulose
Hot extraction according to Randall - the quicker extraction method
Hot extraction according to Randall - the quicker extraction method
Manual devices for hot extractions that are several time quicker
than a customary Soxhlet extraction, incl. on set of extraction sleeves, 100 ml.
Boiling
During the first step, the extraction sleeve is with the sample in the vessel with the boiling extractant, like a tea bag in a cup with hot water. Most of the substance that is to be extracted enters the solution in this step and distributes itself in the solvent.
The upper part of the device acts simply like a reflux cooler; the condensate drips into the extraction sleeve and helps bring the substance into the solution.
Rinsing
In a second step, the extraction sleeve is pulled out of the sump. Extract still adheres to it; and there still might be substance in the sample that has not yet dissolved. The condensate from the cooler rinses the extract and little by little dissolves the undissolved parts.
If you wish to further process the extract, this means the extraction is complete at this stage. Otherwise, you remove the solvent in a third step.
Evaporation
When evaporating, close the return cock on the cooler, the condensate collects in the lower part of the cooler; you can reuse it for the next extraction. Thanks to the short routes of the device, the sample can be evaporated until it is virtually dry.
- Optimum safety with screwed extraction units
- Multi-position extraction units:
- Each extraction sleeve with sample can be moved individually
- The user can lower and lift all extraction units with a lever together into the heating chamber
- Each heating position with separate temperature adjustment
The benefits of the hot extraction procedure are
The benefits of the hot extraction procedure are
- A compact device with short paths
- Low need of solvent
- Short extraction duration - typically about an hour.
Due to the short extraction duration, hot extraction is also gentle for the extractant.
There are now an increasing number of standardized analyses procedures that make use of hot extraction.
Up to 40% - 70% faster than the classic Soxhlet method (depending on sample material)
- Food analysis
- Oil & fat analysis
- Beverage industry
- Feed analysis
- Agricultural industry
- Environmental analysis
- Chemicals & plastics industry
- Cosmetics industry
- Pharmaceuticals industry
- R&D laboratories
Content | Filesize | last updated | |
(PDF) Download | Flyer Siedeverzug | 166.4 KB | 24.11.2017 |
(PDF) Download | Prospekt Extraktion | 3.8 MB | 24.11.2017 |
(PDF) Download | Prospekt Futtermittelanalytik | 2.9 MB | 24.11.2017 |
Article
Art.-No. | |||
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E 1 | One sample position | B00218450 |
|
E 4 | Four individually adjustable sample positions | B00218451 |
|
E 6 | Six individually adjustable sample positions | B00218452 |