Resolution colorimetric device and equipment

Abstract

The invention discloses a resolution colorimetric device and equipment. The reagent quantity required in the embodiment of the invention is much smaller than that of the existing product in the market(such as a vertical pipe structure). Under the condition of small reagent quantity change, the variable and controllable light path is realized. The light path change can be realized only by changinga middle glass pipe; the sensitivity is high if the light path is long. A colorimetric vessel does not need special processing; a used lens and glass pipes are all standard elements; the cost is reduced; the quality controllability and the maintainability and replaceability of the equipment are improved.

Description

technical field [0001] The invention relates to the field of water quality detection equipment, in particular to a digestion colorimetric device and equipment. Background technique [0002] There are many methods for water quality testing, among which spectrophotometry is the most widely used. Spectrophotometry is a water quality detection method based on Lambert-Beer's law. It has the advantages of good selectivity, high sensitivity, low analysis cost, and equipment detection. It has realized the determination of most water quality factors and has become a variety of water quality factors. Standard method of detection. [0003] The photoelectric colorimetric structure of existing water quality analyzers based on spectrophotometry mostly adopts a vertical incident single optical path structure, and the diameter of the cuvette is generally 10-20mm, which is the same as the optical path, resulting in a large volume of the digestion cuvette. The total amount of reagents requi...

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Problems solved by technology

[0003] The photoelectric colorimetric structure of existing water quality analyzers based on spectrophotometry mostly adopts a vertical incident single optical path structure, and the diameter of the cuvette is generally 10-20mm, which is the same as the optical path, resulting in a large volume of the digestion cuvette. The total amount of reagents required for a single measurement by different manufacturers is about 10ml-40ml, wasting reagents and discharging waste liquid is likely to cause large secondary pollution

In addition, digestion is carried out in a high temperature and high pressure environment, and the cuvette needs to bear a lot of pressure. The diameter of the existing straight tube cuvette is not consistent, generally wide at the top and narrow at the bottom. The processing is not small, and it needs to be done manually.

The patent (CN103018169A) proposes a special-shaped cuvette to reduce reagent consumption, and this design is more difficult to process

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