The article discusses the main sources of uncertainty in measurements of physicochemical quantities, which are an integral part of any experimental research in physics and chemistry. Various factors affecting the accuracy and reliability of measurement results are analyzed, including errors in instrumental systems, the influence of external conditions, and the human factor. Particular attention is paid to methods for estimating and minimizing uncertainty, such as the use of standards, instrument calibration, and statistical data processing. The work also provides examples of practical measurements in chemical analytics and materials physics, where uncertainty is critical to the results obtained. Recommendations for uncertainty management can be useful for both researchers and specialists working in the field of quality control and product certification.

Measurement uncertainty, physicochemical quantities, experimental research

Miraliyeva, A. K., Rashidov, A. S., Ernazarova, Z. X., Masharipov, S. M., & Mirpayziyeva, G. M. (2021, November). Experimental quantification of measurement uncertainty and other verification criteria for analytical test methods. In Journal of Physics: Conference Series (Vol. 2094, No. 5, p. 052031). IOP Publishing. https://iopscience.iop.org/article/10.1088/1742-6596/2094/5/052031/pdf.

Masharipov, S. M., Ruzmatov, K. R., Rahmatullayev, S. A., Fattoyev, F. F., Mahmudjonov, M. M., & Isaqov, A. G. (2021, November). Assessment and investigation of measurement uncertainty of standard samples of substances and materials in physicochemical measurements based on standard test methods. In Journal of Physics: Conference Series (Vol. 2094, No. 5, p. 052011). IOP Publishing. https://iopscience.iop.org/article/10.1088/1742-6596/2094/5/052011/pdf.

Masharipov, S. M., & Azimov, R. K. (2017). Multifunctional information and measuring complex for controlling the parameters of fibrous materials and dispersed media. Measurement techniques, 60(6), 643-646. https://www.springerprofessional.de/en/multifunctional-information-and-measuring-complex-for-controllin/15100128.

Matyakubova, P. M., Masharipov, S. M., Ruzmatov, K. R., & Sultanov, M. K. (2021, April). Methods for monitoring metrological characteristics of scientific and physical parameters of intelligent sensors in real operating conditions. In Journal of Physics: Conference Series (Vol. 1889, No. 3, p. 032037). IOP Publishing.

Masharipov, S. M., Ruzmatov, K. R., Rahmatullayev, S. A., Fattoyev, F. F., Mahmudjonov, M. M., & Isaqov, A. G. (2021, November). Assessment and investigation of measurement uncertainty of standard samples of substances and materials in physicochemical measurements based on standard test methods. In Journal of Physics: Conference Series (Vol. 2094, No. 5, p. 052011). IOP Publishing.

Masharipov, S. M., Ruzmatov, K. R., Ametova, B. X., Djumaniyazova, N. A., & Kenjayeva, Z. S. (2022, November). Verification of food testing methods in the operations of accredited testing laboratories according to ISO/IEC 17025: 2017. In AIP Conference Proceedings (Vol. 2647, No. 1). AIP Publishing.

Masharipov, S. M. (2022, December). Software for measurement uncertainty assessment and actual metrological characteristics of viscometers. In Journal of Physics: Conference Series (Vol. 2373, No. 5, p. 052001). IOP Publishing.

Xaydarova, M., & Masharipov, S. (2024, March). Processing the results of joint measurements when measuring physical and chemical values. In American Institute of Physics Conference Series (Vol. 3045, No. 1, p. 040035).

Masharipov, S., & Qudratov, J. (2024, March). Experimental study of accuracy, precision, stability and uncertainty of physical and chemical quantities using certified reference materials. In AIP Conference Proceedings (Vol. 3045, No. 1). AIP Publishing.

Atamirzayev, N., & Masharipov, S. (2024, March). Processing of several groups of direct measurements with multiple observations. In AIP Conference Proceedings (Vol. 3045, No. 1). AIP Publishing.

Erkaboyev, A., Masharipov, S. Risk management and monitoring in accredited analytical testing laboratories, AIP Conference Proceedings., 2024, 3045(1), 030077.

Masharipov, S.M., Mavlyanov, M.A., Abdumajidov, I.B. Metrological Requirements of International Standard ISO/IEC 17025:2017 and Experimental Study Questions on Metrological Traceability of Measurement Results, AIP Conference Proceedings., 2024, 2969(1), 060043.

Masharipov, S. M., & Rakhmatullaev, S. A. (2023). Kinematic viscosity of liquid media and providing metrological observability of experimental results. In E3S Web of Conferences (Vol. 390, p. 01006). EDP Sciences.

Axmedov, G., & Masharipov, S. (2024). Development of metrological support for measurement of physico-chemical quantities. In E3S Web of Conferences (Vol. 538, p. 03027). EDP Sciences.

Raxmonov, A., Masharipov, S., Rakhmatullaev, S., & Miraliyeva, A. (2024). Metrological reliability of primary transducers taking into account element stability and accuracy. In E3S Web of Conferences (Vol. 548, p. 08001). EDP Sciences.