Zhumagali А., Baikhozhayeva Б. and Moldakhmetova А. 2021. Comparison of the results of pH measurements in a buffer solution. Eurasian Journal of Applied Engineering and Technology (EJAET). 135, 2 (Jun. 2021), 64–70. DOI:https://doi.org/10.32523/2616-7263-2021-135-2-64-70.