Zooplankton sample flushing device

Abstract

The invention discloses a zooplankton sample flushing device, and relates to the technical field of laboratory sample flushing devices. The zooplankton sample flushing device comprises an inner funnel, an outer funnel and a funnel cover, wherein the inner funnel is installed in the outer funnel, and the funnel cover covers the top of the outer funnel; a plurality of side wall holes are formed in the side wall of a cup body of the inner funnel, a filtering device is arranged on the inner wall of the cup body of the inner funnel, and a collecting area is arranged at the bottom of the filtering device; a circulating pipe is arranged on the funnel cover, and the bottom of the circulating pipe extends into the collecting area; and a porous separation plate is arranged above the collecting area, a circulation opening and a plurality of separation holes are formed in the porous separation plate, the diameter of the circulation opening is matched with that of the circulating pipe, and the circulation opening is used for allowing the circulating pipe to pass through. The zooplankton sample flushing device can conveniently and quickly filter and collect zooplankton samples.

Description

technical field [0001] The invention relates to the technical field of laboratory sample washing devices, in particular to a zooplankton sample washing device. Background technique [0002] Zooplankton is the primary consumer in the marine ecosystem, and controls the density of phytoplankton through predation; at the same time, zooplankton is also a secondary producer of the marine food chain, serving as bait organisms for higher organisms such as fish, so the impact of zooplankton on the marine ecosystem Both structure and function play important regulatory roles. The investigation of marine zooplankton requires trawl sampling to be fixed with 5% formaldehyde, and microscope classification and counting in the laboratory. At present, before microscopic examination in the laboratory, samples need to be rinsed with running water to remove formaldehyde, which is carried out with the help of funnels and sieves. After suction filtration, zooplankton are retained on the sieves, a...

AI Technical Summary

Problems solved by technology

[0003] During the washing process, the zooplankton samples to be washed or the water flow are prone to splash, resulting in sample loss and environmental pollution; since there is no fixed device, the sieve silk is easily displaced, causing the sample to flow out from the gap between the sieve silk and the funnel. Cause sample loss; due to the suction of water molecules between the sieve and the funnel, the water flow out is slower and takes a lot of time

During the suction filtration process, the entire sieve traps zooplankton, and the samples cannot be collected centrally, resulting in easy loss during the sample collection process.

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