diff --git a/Model/granulo_loader.py b/Model/granulo_loader.py
index 80d51ef..b7ea7e0 100644
--- a/Model/granulo_loader.py
+++ b/Model/granulo_loader.py
@@ -32,10 +32,15 @@ class GranuloLoader:
 
         self._frac_vol_sand_cumul = np.cumsum(self._frac_vol_sand, axis=1)    # Cumulated volume fraction (%)
 
+        # --- Compute % of fine and % of sand sediment in total concentration ---
+
+        self._Ctot_fine_per_cent = 100 * self._Ctot_fine / (self._Ctot_fine + self._Ctot_sand)
+        self._Ctot_sand_per_cent = 100 * self._Ctot_sand / (self._Ctot_fine + self._Ctot_sand)
+
 
 if __name__ == "__main__":
     GranuloLoader("/home/bmoudjed/Documents/3 SSC acoustic meas project/Graphical interface project/Data/Granulo_data/"
                   "fine_sample_file.ods",
                   "/home/bmoudjed/Documents/3 SSC acoustic meas project/Graphical interface project/Data/Granulo_data/"
-                  "fine_sample_file.ods")
+                  "sand_sample_file.ods")