Quick Answer: The Funnel Tullgren is used to extract small invertebrate animals from a dry soil sample, using a light above a gauze-based container set over a funnel. Most species are collected after two hours, while complete extraction takes two to three days.
Last updated: October 2026
Key Features
Extracts small invertebrates from dry soil samples
Container with a gauze base whose mesh holds back soil but lets animals pass
Container sits over a funnel, with a light above
Animals move down away from the heat, through the gauze and into the funnel for collection
Most species collected after two hours; complete extraction in two to three days
Technical Specifications
Specification
Value
Use
Extraction of small invertebrates from dry soil
Sample holder
Container with gauze mesh base
Heat source
Light above the sample
Extraction time
Most species after two hours; complete extraction two to three days
About This Product
Ecology classes use a Tullgren funnel to find the tiny animals that live in soil, which are hard to spot by eye. Students can compare samples taken from different sites and then identify what they collect under a hand lens or microscope.
Frequently Asked Questions
How long does extraction take in the Funnel Tullgren?
Most species are collected after two hours, but complete extraction takes two to three days.
How does the Funnel Tullgren separate animals from soil?
Heat from a light above the sample drives the animals down through a gauze mesh, which holds back the soil, and into the funnel where they are collected.
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