This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionComplexometric titration.jpg
Українська: Кількісний аналіз. Визначення вмісту іонів кальцію та магнію у воді методом комплексонометричного титрування. Титрування трилоном Б з використанням індикатора еріохрома чорного Т.
English: Quantitative analysis. Determination of calcium and magnesium ions in water by complexometric titration. Titration with Trilon B using an indicator Eriochrome Black T.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
https://creativecommons.org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue