The most common method for determination of the carbonation depth is the sprayed application of indicator solutions, Phenolphthalein in particular. Since the aerosols of Phenolphthalein are suspected to be carcinogenic, efforts have been intensified to use alternative indicators for the determination of carbonation depth. The subject and aim of this research paper are to examine indicator solutions from Alizarin Yellow R, Thymol Blue and a Mixed Indicator. These indicator solutions are commercially available and are not suspected to be carcinogenic. For the purpose of this research, samples previously stored under accelerated carbonation conditions (1 % CO₂) were examined by thermogravimetric analysis (TGA) and examination of the pH value. Additionally, the electrolytic back-titration for determination of total CO₂ amount was carried out comparatively to TGA.

确定碳化深度的最常用方法是喷涂指示剂溶液，尤其是酚酞。由于苯酚酞的气溶胶被怀疑具有致癌性，因此人们加大了使用替代指标来确定碳酸化深度的努力。本研究的主题和目的是研究茜素黄R，百里酚蓝和混合指示剂中的指示剂。这些指示剂溶液可商购获得，并且不怀疑具有致癌性。出于本研究的目的，以前在加速碳酸化条件下（1％CO ₂通过热重分析（TGA）和pH值进行检查。另外，用于测定总CO ₂量的电解反滴定与TGA相比进行。