What are the Features of HAWACH Extraction Thimbles?
The extraction thimbles are very useful tools in the lab because they can minimize your hands-on responsibilities when you separate desired compounds. They can be used in most of the Soxhlet or automated extractors which can take multiple cycles. High-retention devices always present consistent results by preventing certain elements from escaping successfully.
Right thimble sizes should be considered to fit extractors correctly. And when you calculate external diameters, extra wall thickness should be aware of. The thimble should pass through the narrower end of the upper extractor socket, with 1-2 mm clearance and 5-10 mm higher above the level of the top of the tube.
Besides the size, We can find two kinds of extractor thimbles of different media in the market, cellulose extraction thimbles and glass microfiber extraction thimbles. Made of high-grade cotton cellulose with a smooth interior surface, cellulose thimbles are absolutely seamless and fitting in most of the Soxhlet extraction devices. High purity glass microfiber thimbles are used for high-temperature filtration. They can take the temperature of up to 550℃. When the solvent is not compatible with the cellulose thimble, a glass microfiber thimble will be the choice.
HAWACH provides a wide range of specialized services and digital solutions to help you solve complex challenges, whose capabilities grow with customers’ needs. The products produced by HAWACH allow lab, clinical, and other related workplaces to focus on core scientific priorities instead of the experiment tool quality. HAWACH has provided experts in scientific operations, improving performance with sophisticated solutions and providing guidance on best practices. More importantly, the products can be customized for the best efficiency.
To analyze the fats or pesticides in foods and soil materials, Soxhlet extraction is a widely used technique. Also, it can be used in many other procedures that involve a solid-liquid extraction. One of the most important elements is the extraction of thimbles, including the cellulose and glass fiber extraction thimbles.
Cellulose extraction thimbles
Made of high-quality alpha cellulose cotton linter with excellent mechanical strength and retention, its cellulose extraction thimbles are well received. The high purity of the materials ensures reliable and reproducible analytical results. It can be Standard single thickness thimble with a wall thickness of approximately 1-1.5mm and can be double thickness thimbles with a wall thickness of approximately 2mm. The second one is applied for the experiment with higher requirements-higher retention and increased wet or dry strength or rigidity. Their measurements can be matched to specific Soxhlet extractor systems.
Glass fiber extraction thimbles
For the glass fiber extraction thimbles, they are suitable for temperatures higher 120°C (248°F) and cellulose suitable for temperatures lower than 120°C. The applications are what can not be applied to cellulose extraction thimbles, like strong acid. Other typical applications include detection of stationary pollution sources, say smoke and dust; detection of cadmium, nickel, tin, fluoride, etc. from fixed pollution sources; benzo ratio, lead, asphalt fume, sulfuric acid mist, etc. from fixed pollution sources, ambient air, and arsenic, dioxin, etc. Its weight loss is less than 0.2 (m=m1-m2; m1: the weight after dried at use-temperature for 60 min; m2: the weight after dried at use-temperature for 120 min ).
Cellulose and glass microfiber extraction thimbles are widely used in Soxhlet extraction units and used in a wide variety of solid-liquid extraction studies, including lipid and pesticide analyses in food and soil samples. Both provide a safe convenient and efficient method of solvent extraction of solids and semi-solids.