CS239078B1 - Continuously mixing and adding to the spectrophotometer - Google Patents

Abstract

The continuous mixing and addition device is intended for spectrophotometric measurements. The essence of the device is that it consists of a voltage connection, a switch and a driving electric motor of an inert stirrer through a gear and shafts, while next to the inert stirrer there are supply, suction and addition micropipettes of substances and samples through their openings. The continuous mixing and addition device for spectrophotometers can be used in spectrophotometric laboratories and test rooms.

Description

- 1,239,078

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous mixing and adding device to a spectrophotometer for adding and aspirating media and substances from a cuvette.

So far used spectrophotometric instruments make it possible to monitor? the course of the reactions associated with the change in light absorption and the changes that take place after the addition of certain solutions during the reactions, or the mixing of the reaction mixtures during spectrophotometric analysis. For example, in the "stoppedilow accessory" of the devices, the medium and the analyzed material are pneumatically conveyed to a spectrophotometric cuvette where the reaction time is monitored from the time of mixing. Mixing and adding equipment allows the sample to be continuously mixed in a spectrophotometric swing while the pneumatic additive is added to the sample to be analyzed. For a mixer with a mixer disk, a substance can be prepared whose reaction with the sample in the spectrophotometric swing is monitored? and during pre-mixing of the sample, the prepared substance is added to the sample to be analyzed · In many cases, the devices mentioned may satisfy the requirements of the experimenter or spectrophotometric laboratory. the course of the reactions, while the currently available devices do not allow the full potential of modern spectrophotometric techniques to be exploited. It is particularly true that not all of them allow the reactions of substances in the rock to be monitored to restrain its influence. In addition, they do not ensure mixing of the substances during the reaction and do not allow to add to the reaction mixture the substances by which we want to influence the reaction. The need to select a device and cuvette from a spectrophotometric instrument to purify and prepare a new measurement extends the measurement length.

The above mentioned drawbacks are remedied continuously by the mixing and adding device to the spectrophotometers of the invention according to the invention, which consists in the fact that it consists of a connection of the base, a switch and an electric motor of the in-mix stirrer through the gear and the shaft, passing the inert stirrer supply and suction and supply hoses and micropipes are placed through their openings ·

The invention: continuous mixing and adding equipment to the spectrophotometers allows continuous measurement on spectrophotometers, since the opening of the cuvette space of the spectrophotometer into which the device is placed is not required · Allows the supply of measured or cleaning media directly to the measuring cell in the spectrophotometer stirring continuously during measurement. After the measurement is completed, it allows the extraction of media and the cleaning of the cuvette or preparation of further measurement. · Allows dosing of samples reacted outside the cuvette spectrophotometers and dosing of substances by micropipette during measurement.

A continuous mixing and adding device to the spectrophotometer is shown schematically in the accompanying drawing. The drive motor 3 is supplied with voltage through the connection 1 and the switch 2. The drive motor 3 drives the inert stirrer 4 and the shaft 5. The micropipettes 8, 6 and 9 of the substances and samples are dispensed through their openings. Measuring or purifying media whose reaction in the spectrophotometer is to be monitored is fed through a common opening 9 for the micropipette. Micro-pipette £ samples can be added to the cuvette. The cuvette filling is continuously mixed with an inert stirrer (6) to ensure homogeneity * of the sample to be analyzed and to rapidly add the added substances to the entire volume of the spectrophotometric cuvette.

The invention of continuous mixing and adding equipment to spectrophotometers can be utilized in spectrophotometric laboratories and testing laboratories.

Claims (1)

PR2DMET OF THE INVENTION 239 078 Continuously mixing and adding device to spectrophotometers, characterized in that it consists of a voltage connection (1), a switch (2) and a driving electric motor (3) of an inert stirrer (7) via a gear (4) and a shaft (5), stirrers (7) are placed in the supply, suction and addition hoses and micropipettes (8, 6 and 9) of the substances and samples through their openings.