This study presents a comprehensive evaluation of a new methodology for analyzing the particle size distributionParticle size distribution of aluminum hydroxideAluminum hydroxide, crucially important to alumina refineriesAlumina refinery because it affects the process—from precipitation to calcinationCalcination—and ultimately determines yield, qualityQuality, and process efficiency of aluminaAlumina (Al2O3) production. Initially, we conducted both qualitative and quantitative comparisons among several commercially available laser diffraction instruments. Following this, we tested the current CBA equipment, under different analysis modes, specifically single peak and multiple peaks. Our findings revealed significant insights, including the anticipation of trends, identification of blind spots, and variations in peak intensities. These results underscore the importance of selecting appropriate analysis modes to achieve accurate and reliable particle size distributionParticle size distribution data. The implications of these findings for industrial applicationsIndustrial applications and future research directions will be discussed.