Optimization of the physical-chemical processes occurring during the preparation of glass batch, improvement of the batch preparation processes, transport, and feeding into the glassmaking furnace, and the quality indicators of batch are all important but not decisive to obtaining high-quality finished product -glass. Together with these factors the redox properties of the components used for preparing batch and the batch itself as well as the redox potential of molten glass made from the batch are of enormous importance for the glassmaking process and for the quality of molten glass. This article analyzes the redox processes occurring during melting of the sulfate of soda batch with float-glass composition and the optimization of sodium sulfate and carbon addition to the batch in order to obtain a batch that increases the stability of the melting process and the output and improves the quality of the final product with respect to defects such as bubbles and inclusions.Optimization of the physical-chemical processes during the preparation of glass batch is important for obtaining a high-quality batch. The following factors must be taken into account [1]:-particle-size distribution in the batch after the raw materials have been mixed;-batch temperature after the raw materials have been mixed;-moisture content of the batch; -method of feeding and mixing cullet and constancy of the batch/cullet ratio.However, attaining optimal batch-quality parameters in the dispensing-mixing shop is found to be inadequate.Studies of the technological process have established that the batch quality indicators at the time the batch is loaded into the glass furnace are important for the efficiency of the glassmaking process. For this reason, a new method of loading batch into a glass furnace was proposed [2]. Improvement of the processes involved in the preparation, transport, and feeding of batch into a glass furnace had a positive effect on glass making and the quality of the final product.However, in analyzing the operation of two float-lines (the observations were performed over a period of one month) it was noticed that for the same technological parameters of the operation of glass furnaces, such as the capacity and batch/cullet ratio, and for the same batch composition, fluctuations of the bottom temperatures in the melting zone and of the gas temperature, including in the maximum temperature zone, arose periodically (repeatedly) and simultaneously in both lines. Such changes often increased the number of gas inclusions in the form of stony inclusions and striae, which undoubtedly lowered the quality of the glass and the molten-glass utilization factor (MUF).This required a deeper analysis of the redox properties of the components used for preparing batch and the mixture and redox potential of the molten glass made using this mixture. This is especially important because active oxidizing and reducing agents (sodium sulfate and carbon) are used in the batch and one of the aims of the present work is to optimize their amounts.It ...