*2.2. Chemical Analysis of the Soak Solution*

The collected soak solutions were first filtered using a 0.2 μm cellulose acetate filter to separate solids from the fluids. The resulting fluids were then analyzed using inductively coupled plasma, optical emission spectroscopy (ICP-OES, Thermo-Scientific iCAP 7400 spectrometer) and ion chromatography (IC, DIONEX ICS-900) techniques.

**Citation:** Tokpatayeva, R.; Olek, J.; Sahu, S. Sulfate Resistance in Carbonated Low-Calcium Silicate Cement Pastes. *Mater. Proc.* **2023**, *13*, 22. https://doi.org/10.3390/ materproc2023013022

Academic Editors: Katarzyna Mróz, Tomasz Tracz, Tomasz Zdeb and Izabela Hager

Published: 15 February 2023

**Copyright:** © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
