SU648850A1 - Measuring cuvette - Google Patents

Description

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H3o6pieteHHe relates to the technique of physical and chemical analysis of liquids:

.Choose the spectra for spectroscopic | 4pM analysy containing 1131303 pR;; | Yabi case, yanal: For children running, streamlined brushes, inlet and outlet holes, a couple of narrow holes (windows) centered in the axes to define the path of the transverse light through, average area 11} ..

However, a change in the length of the cuvette 6e getg 0a is a recalculation of its form and size, otherwise the working cavity of the cell will disturb the uniformity of n (JsOKa, not due to the violation of its streamlined shape). Moreover, the use of this cell in the npii jiSopax spectroscopic analysis of magnitude causes a measurement error from contamination look | The cuvette influences the physicochemical coniferous material of the window windows and other

The information is also a measuring cuvette containing a reservoir with observation windows, input and output channels 12). The offset of the frames relative to the axis of the cuvette allows you to change the thickness of the layer of the test medium.

Having the advantage over other possibilities of adjusting the length of the cuvette 6e: t, reconfiguring the optical circuit of the instrument, this cuvette does not eliminate the measurement error from contamination in the optical path.

The aim of the invention is to improve the measurement accuracy.

This is achieved by the fact that the c-rug of the c-abgen is a shaper of the fluid flow of the combined profile with a cross-section that smoothly passes from the parabic-rectangular.

The elimination of the direct contact of the flow of the test liquid with the inner surface of the cuvette walls, where the observation holes are located, makes it possible to eliminate measurement errors from contamination of the mounted windows of the cuvette and the influence of the physical properties of their material.

FIG. I presents a cuvette, vertical section; in fig. 2 is a section A.A. in FIG. one; in fig. 3 - section BB on. FIG. I.

Claims (1)

The cuvette contains a housing I with observation ports, an inlet. 2 and output 3 channels with connections, shaper flow. ka 4. The flow of the measured fluid is directed at the tangent by the inlet nozzle onto the flow former and discharges from it by a plane jet, the thickness of which is regulated by a constant flow rate of liquid width-; Noah of a rectangular section. The proposed measuring cell ot is easy to construct, there is no need to use glasses for cuvette windows, to seal them, which makes it possible to avoid the occurrence of measurement errors in the measuring (optical) path, which are on average 1 or more basic; the sinfulness of the device, excludes stopping:;) TH {W, brra, assembling and disassembling it for cleaning windows. The invention includes a measuring cuvette containing a norm, a bus with viewing holes, inlet and outlet channels, which, in order to improve the measurement accuracy, it is equipped with a former profile flow generator with a cross section, which gradually changes from parabolic to right mountable Sources of information taken into account in the examination 1. Patent SCHAMAM 57: 28032, cl. 356-246: F73. one;,;.. . . f. Copyright of the USSR $ fs 550536, cl. G 011 J 1 / V4, | 976: ll ff-g. -4Fa .g F (p.3