Cuvette and preparation method

Abstract

The invention relates to improvement of a cuvette for optical detection. The improved cuvette is characterized in that a non-light transmission surface of the cuvette is provided with a hollow interlayer, and the hollow interlayer is provided with a circulating inlet-outlet channel for a thermal fluid medium to pass through an interlayer surface. The preparation method of the cuvette comprises the following steps: respectively heating and bending bar-shaped optical light transmission sheets which have equal widths and undergoe qualified processing into two U shapes with the different bending widths; internally and externally suspending and nesting two bending U shapes; positioning one side face on a substrate through binding for shaping; carrying out grinding processing on the nested U shape to position the opposite side to the horizontal; binding a light transmission plane film and separating from the positioning substrate; carrying out the grinding processing on an original binding side to an optical path size; binding the other light transmission plane film; and respectively binding a sealing plate and manufacturing an interface at the upper end of the hollow interlayer. Compared with the prior art, the cuvette has the hollow interlayer so that the cuvette has a constant temperature function, thereby completely satisfying the requirement of a constant temperature test.

Description

technical field [0001] The invention is an improvement to the cuvette for optical detection, in particular to a cuvette with constant temperature function and a preparation method. Background technique [0002] In some chemical analysis, such as blood analysis, it needs to be detected in a constant temperature environment, which requires the cuvette to have a constant temperature characteristic and provide a constant temperature environment for containing the measured liquid. The cuvette detection is a light-transmitting detection, so the constant temperature detection in the prior art basically uses a heating device to heat the cuvette from the bottom to maintain a constant temperature of the detection liquid in the cuvette. However, this method of using the bottom of the cuvette to heat to achieve a constant temperature has many shortcomings: one is heating at the bottom, because the length-diameter ratio of the cuvette is large, the temperature of the liquid in the cuvett...

AI Technical Summary

Problems solved by technology

However, this method of using the bottom of the cuvette to heat to achieve a constant temperature has many shortcomings: one is the bottom heating, because the cuvette has a large aspect ratio, the temperature of the liquid in the cuvette is not easy to be uniform, which will affect the test results; the other is local heating. External heating makes it difficult to control the temperature inside the cuvette, which will also affect the test results; third, it is necessary to modify the analytical test instrument and add a heating device, which is not only complicated but also increases the cost

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