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The most important factors affecting the preparation of triple superphosphate fertilizer (TSP) in terms of P₂O₅., %conversion efficiency were studied using both changing one factor at a time (OFAT) and the multivariate 2⁴ full factorial methodologies. The obtained results were statistically analyzed using analysis of variances (ANOVA) to measure the adequacy of the fitted model. The first order regression model was built to approximate the preparation of triple superphosphate fertilizer based on the design of experiments (DOE).   It was noticed that a low H₃PO₄ acid concentration with a relatively long reaction time was more favorable for improving both water soluble phosphate (W/S) and P₂O₅ conversion efficiency during the preparation of triple superphosphate (TSP). The (DOE) methodology has also been shown to be more effective due to its economic feasibility and reduced time; additionally, the model built for P₂O₅ % conversion efficiency to produce (TSP) when low concentrated phosphoric acid was utilized was judged accurate and reliable. 95 % (-100) mesh, 20% H₃PO₄ solution, 1:4 S/L ratio, and a 20-minute reaction period were the optimal conditions for W/S and P₂O₅ conversion efficiency. Under these ideal conditions, a P₂O₅ conversion of 86.61% was effectively accomplished during the preparation of triple superphosphate fertilizer. These results backed up the model's experimental validity and the presence of ideal conditions. This verified that the developed model for P2O5., % conversion was accurate and trustworthy.