Exposure device for fish embryos and larva fish for long-term chronic toxicity tests
A chronic toxicity and embryo technology, applied in the field of embryo and larvae exposure devices, can solve the problems of failing to meet the quality control of testing standards, no detailed methods for key technologies, and low survival rates of embryos and larvae
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[0016] Such as figure 1 Shown, the exposure device of the fish long-term chronic toxicity test embryo of this example and larvae comprises external large container 1 and large container cover 2, is provided with a small container mouth 4 at described large container cover 2, in described A small container 3 is suspended on the small container mouth 4, so that the small container 3 stretches into the inner space of the large container 1, and the bottom of the small container has a certain distance from the bottom of the large container. Also be provided with overflow pipe 6 in small container 3, this overflow pipe 6 passes through small container bottom wall and large container bottom wall and links to each other with a water inlet of three-way valve 8, another water inlet of three-way valve 8 is connected with The drainage pipe 7 is connected, and the drainage pipe 7 passes through the bottom wall of the large container and extends into the bottom of the large container. The w...
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