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Transportation of samples from the collection point to the laboratory, as well as storage and preservation techniques, are crucial for maintaining sample integrity and ensuring accurate and reliable test results.
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    Area of Science:

    • Physical Chemistry
    • Materials Science
    • Acoustics

    Background:

    • Accurate characterization of liquid properties is crucial in various scientific and industrial applications.
    • Existing ultrasonic spectrometers may have limitations in thermal stability, sample volume, or ease of use.

    Purpose of the Study:

    • To develop and validate a novel ultrasonic spectrometer for liquid analysis.
    • To incorporate features for enhanced thermal stability and user-friendly sample handling.

    Main Methods:

    • Development of an ultrasonic spectrometer operating between 20-80 MHz.
    • Utilized Peltier cells for precise temperature control (<0.01 °C).
    • Employed commercial cuvettes for small sample volumes (≤3 ml) enabling easy exchange and sterilization.

    Main Results:

    • The spectrometer demonstrated high thermal stability.
    • Successful measurements of propagation velocity and attenuation coefficient in various liquid samples.
    • Validated performance with water-NaCl mixtures, silicone oil, castor oil, and polystyrene particle suspensions (10- and 15-µm diameters).

    Conclusions:

    • The developed ultrasonic spectrometer is a versatile and reliable instrument for characterizing liquid properties.
    • Its design facilitates practical sample handling and ensures high measurement accuracy.
    • The instrument shows potential for diverse applications in material science and physical chemistry.