Back to search results

Liquid flask with adjustable thickness of the test liquid layer

Back to search results
Liquid flask with adjustable thickness of the test liquid layer
Manufacturer:
SIMEKS
Location:
Novosibirsk
Applying:
A liquid flask with an adjustable layer thickness of the liquid under study is made in the form of an optical-mechanical attachment installed in the cuvette compartment of the FT-801 spectrometer. It contains focusing optics, removable holders of two windows-substrates with a diameter of 10 mm and two adjusting screws placed on the upper panel of the console housing and designed to set the required gap between the windows.

A liquid of any degree of viscosity is pre-applied in the form of a small drop to the lower window and then, in the process of smooth convergence of the windows, evenly fills the gap between them. By rotating the adjusting screws and observing the transmission spectrum online, the user has the opportunity to set the desired thickness of the liquid layer, guided by the overall intensity of the entire spectrum or by the intensity of specific absorption bands. In the presence of calibration, which is easy to create using the ZaIR 3.5 program for several samples with a known concentration, the cuvette allows quantitative measurements. The flask is indispensable in the analysis of mixtures containing impurities in small proportions.

Technical specifications

Transmission in the operating range of the spectrum, % of the input signal at least 50
The recommended number of scans when registering spectra is 16
Time of spectrum registration at 16 scans (resolution 4 cm-1), sec 20
Minimum volume of the studied liquid, mm3 1
The diameter of the focus spot, mm 3
Overall dimensions, mm 200×90×160
Weight, kg 1,1

The figure shows several spectra of the viscous lubricant "Buxol", illustrating the process of selecting the thickness of the sample layer between the windows.

The measurement process has a high expressiveness and reproducibility, inexpensive replaceable substrate windows are used, the system is easy to configure and clean, a very small amount of sample is required to obtain high-quality spectra.