Figure 7 from: Peleshok K, Bondar B, Kryskiw L, Kucher T, Poliak O, Logoyda L (2021) Non-extractive spectrophotometric determination of valsartan in pure form and in pharmaceutical products by ion-pair complex formation with bromophenol blue and methyl red. Pharmacia 68(4): 851-858. https://doi.org/10.3897/pharmacia.68.e73559

Figure 7 Absolute values ∆ A of the difference in the absorption of valsartan with MR in different solvents with the absorption of MR in different solvents.