Storage and transportation box for aquatic product samples of nitrofuran metabolites to be detected

Abstract

The aquatic product sample storage and transportation box comprises a heat preservation box body, a box cover, a lining box and a refrigerant box, a supporting plate is arranged in the lining box, a water storage chamber is formed by a gap between the supporting plate and the lining box, an inner surrounding plate is arranged on the lining box, a lower channel is formed by a gap between the inner surrounding plate and the lining box, and the lower channel is communicated with the water storage chamber. A sample groove is formed in the inner surrounding plate, a water leakage hole is formed in the groove bottom of the sample groove, and a circulation hole is formed in the groove wall of the sample groove; the refrigerant box comprises an outer frame and a guide cylinder, the outer frame is placed on the lining box, a heat conducting plate is arranged in the outer frame, an annular L-shaped groove is formed below the heat conducting plate, the L-shaped groove, the outer frame and the heat conducting plate define a water collecting cavity, a heat exchange chamber is formed by a through hole in the heat conducting plate, the vertical face of the L-shaped groove and the heat conducting plate, and the guide cylinder is fixed to the bottom of the L-shaped groove. A gap between the guide cylinder and the outer frame forms an upper channel, and the guide cylinder is provided with an inlet. The device is simple in structure, samples can be independently placed and are convenient to take and place, the internal temperature is uniform, and the refrigeration effect is good.

Description

technical field [0001] The invention relates to a sample box, in particular to an aquatic product sample storage and transportation box for nitrofuran metabolites to be tested. Background technique [0002] Nitrofurans are synthetic broad-spectrum antibacterial drugs that can inhibit or kill most Gram-positive bacteria, Gram-negative bacteria, fungi, protozoa and other pathogens, and have been widely used In the livestock and aquaculture industry, it is used to treat enteritis, scabies, red fin disease, ulcer disease, etc. caused by Escherichia coli or Salmonella. [0003] Due to the potential danger of mutagenesis and carcinogenicity of these drugs, and their metabolites remain in the animal body and the environment for a long time, they have been banned from being used in food animals by many countries. All countries in the world have strict controls on nitrofuran drugs, and have clear regulations on their monitoring standards, mainly focusing on the metabolites of furalt...

AI Technical Summary

Problems solved by technology

At present, aquatic product samples are usually put into sample bags and sealed, and then placed in storage boxes or incubators with ice packs and other refrigerants at the bottom. This kind of storage has the following defects: (1) The temperature distribution in the box is uneven, low temperature The preservation effect is poor; (2) The samples are piled up messily, and the sample bags are backlogged and in contact with each other, which may easily cause damage to the sample bag, and it is inconvenient to take; (3) Condensed water will be generated on the surface of the sample bag, and when the sample bag is taken out, residual Condensation on the surface of the sample bag will drip and affect cleanliness

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