Multi-Reagent Cuvettes for Portable Colorimetric Devices

Abstract

A portable multi-reagent colorimetric tube, which comprises an outer tube (1) for containing a first reagent (1.1) and / or a sample to be tested and an inner tube (2) for containing at least one other reagent, wherein the upper end of the outer tube (1) is provided with an opening for inserting the inner tube (2), the first reagent (1.1) is a liquid, and the other reagents have a solid structure; and further comprises steel beads (8) for stirring and mixing the reagents, wherein the steel beads (8) are placed inside the inner tube (2), a first position-limiting mechanism for storing the other reagents and the steel beads inside the inner tube (2) is provided inside the inner tube (2), the steel beads (8) are placed below the other reagents, and a material ejecting mechanism for ejecting the steel beads (8) and the other reagents out to enable them to fall into the first reagent (1.1) is provided at the upper end of the inner wall of the inner tube (2).

Description

technical field [0001] The invention relates to the field of sample detection, in particular to a multi-reagent colorimetric tube used in a portable colorimetric device. Background technique [0002] At present, the colorimetric tube is used in the chemical analysis and detection of samples, and the photometric detection of the reacted colorimetric tube is carried out by the instrument to determine the chemical composition of the sample. The colorimetric tube is widely used in environmental protection detection (such as river water quality detection), food quality detection In the field of testing, medical testing or other industries, the portable colorimetric tube is small in size and can be used to carry it out to test samples on the spot, which is real-time and convenient. [0003] For example, in many medical tests, it is necessary to mix the sample to be measured with the first liquid, so as to remove the interfering components in the sample and start the first chemical...

AI Technical Summary

Problems solved by technology

[0006] 1) The amount and ratio of the first liquid and the second liquid used to react with the sample need to be strictly controlled, and the above method of mixing the first liquid and the second liquid by pushing the sealing plug makes it easy for the second liquid to remain in the The inner wall of the second mixing container or the sealing plug will lead to inaccurate dosage of the second liquid participating in the reaction, thereby affecting the reaction between the first liquid and the second liquid, and ultimately leading to low accuracy of photometric detection, which is easy to detect in medical testing. misdiagnosis or false positive;

[0007] 2) The existing colorimetric tubes are only suitable for the mixing of two liquid reagents, and cannot be tested with more than three reagents;

[0008] 3) Since the steel balls are pre-packaged in the liquid in the first mixing container, and before the steel balls are soaked in the liquid, the surface of the steel balls needs to be specially treated, and the long-term immersion of the steel balls in the liquid may cause the composition of the liquid to change. which in turn may affect the outcome of subsequent reactions

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