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Currently, there is no shared sense of how the duration of donor blood plasma heating affects the change in its properties. The results of independent works aimed at determining this effect have significant discrepancies. In this work, for the ongoing study of donor blood plasma properties an experimental setup is presented allowing the heating of a small volume samples with different intensities at a constant temperature of the heat transfer medium. The repeatability of measurements was evaluated in determining the duration of plasma heating using the experimental setup. In each of the four operating modes of the experimental setup 16 runs of the technological operation were performed under conditions of repeatability according to GOST R ISO 21748–2021. Heating duration was set by tracking the changes in temperature of sodium chloride solution which is close to blood plasma in terms of thermal and physical characteristics. Substance temperature was measured by the contact method using thermocouples placed in a polymer container in the form of a tube filled with solution. Comparison of measurement results in each operating mode of the setup was performed, which has made it possible to determine the effect of changes in heating conditions on its repeatability. Comparison of results of repeatability of substance heating in experimental setup and of plasma samples heating with devices used in industrial transfusiology was also performed. The possibility of providing different heating times for small volume of blood plasma samples at a constant temperature of the heat transfer medium under repeatability conditions has been confirmed.
  • Key words: blood plasma thermal treatment, measurement repeatability evaluation
  • Published in: BIOMEDICAL ELECTRONICS
  • Bibliography link: Lemondzhava V. N., Selishchev S. V. Evaluation of measurement repeatability in determining the heating duration of small volumes of donor blood plasma. Izv.vuzov. Elektronika = Proc. Univ. Electronics. 2025;30(4):478–486. (InRuss.).https://doi.org/10.24151/1561-5405-2025-30-4-478-486.
  • Financial source: the work has been supported by the Russian Science Foundation (grant no. 23-29-00385), https://rscf.ru/en/project/23-29-00385/
Vakhtang N. Lemondzhava
National Research University of Electronic Technology (Russia, 124498, Moscow, Zelenograd, Shokin sq., 1); “Scientific and Production Organization “BIOMEDTECH” LLC (Russia, 124482, Moscow, Zelenograd, bld. 315)
Sergey V. Selishchev
National Research University of Electronic Technology (Russia, 124498, Moscow, Zelenograd, Shokin sq., 1)

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