Colorimetric ware and preparation method thereof

Abstract

This invention relates to one analysis comparison hardware and its process method improvement, which is characterized by the following: the glass slice is added with melt agent; finely processing the glass slices into adhesive surface to keep natural absorptive property and then processing melt adhesive operation under lower comparison glass soften temperature.

Description

technical field [0001] The invention relates to the improvement of the cuvette for analysis and its manufacturing method, in particular to a high-precision cuvette and a method for bonding the cuvette glass sheets to each other. Background technique [0002] The cuvette used for quantitative analysis and holding the test solution is a glass vessel with a liquid storage test chamber formed by bonding several optical glass sheets to each other. The existing cuvette glass sheets are bonded to each other through an adhesive (glue) bonding and glass frit fusion bonding) bonding. Glue bonding is to apply glue on the mutual bonding surfaces for bonding, such as described in Chinese patent CN00807831.9. This kind of bonding, due to the poor temperature resistance of the glue, the cuvette is not resistant to high temperature, usually the highest can only withstand about 100 ℃, beyond this temperature the adhesive will lose its effect and cause degumming; secondly, the adhesive is ge...

AI Technical Summary

Problems solved by technology

The disadvantage of this type of bonding is: glass powder is fused and bonded, and the transparency of the bonded surface is poor, which not only affects the appearance quality, but also brings quality defects. For example, due to the different expansion coefficients of glass powder and glass, glass powder is easily fused Cracks are generated, causing the leakage of the test solution, especially in the acid-base or organic solution medium bonding surface, the leakage is more serious; the tiny particles of glass powder will be adsorbed to the light-transmitting surface of the cuvette during the fusion bonding process to form unwanted spots , affect the light transmittance of the test; the melting of glass powder can also easily cause the joints to be rough and not smooth, and it is easy to cause adhesion of the test object, and it is difficult to be effectively cleaned and removed, so it is easy to cause cross-contamination of the test object; these will affect the test accuracy. to bad effects

In addition, the melting point of glass powder is low. When fusing external parts (such as fusing glass tubes), the high temperature of welding will cause the glass powder on the bonding surface to blacken, which will affect the quality of the product and cause serious leakage; The thickness of the layer is difficult to control, resulting in large deviations in bonding tolerance and light transmission parallelism, which not only cause large errors in the optical path (optical path) of the cuvette, but also affect the test accuracy and the rate of excellent products

Especially for the above two kinds of bonding, the optical path accuracy in the light pass area is low, and it is difficult to meet the high precision requirement of ±0.01mm