diff --git a/notebooks/demo_acsm_pipeline.ipynb b/notebooks/demo_acsm_pipeline.ipynb
index cb8ee39..6c6c996 100644
--- a/notebooks/demo_acsm_pipeline.ipynb
+++ b/notebooks/demo_acsm_pipeline.ipynb
@@ -56,6 +56,7 @@
     "from pipelines.steps.update_actris_header import main as update_actris_header\n",
     "from pipelines.steps.utils import load_project_yaml_files\n",
     "from pipelines.steps.update_datachain_params import main as update_datachain_params\n",
+    "from pipelines.steps.drop_column_from_nas_file import main as drop_column_from_nas_file\n",
     "\n",
     "campaign_descriptor = load_project_yaml_files(project_path, \"campaignDescriptor.yaml\")\n",
     "YEAR = campaign_descriptor['year']\n",
@@ -231,6 +232,25 @@
     "prepare_ebas_submission([PATH1, PATH2, PATH3], PATH4, month)\n"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Step 5.1: Remove inletP column from a generated nas file\n",
+    "* Select a nas file from the data folder"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "#path_to_data_file = '../data/CH0001G.20240201010000.20250519140310.aerosol_mass_spectrometer.chemistry_ACSM.pm1_non_refractory.2mo.1h.CH02L_Aerodyne_ToF-ACSM_017.CH02L_Aerodyne_ToF-ACSM_JFJ.lev2.nas'\n",
+    "path_to_data_file = '../data/CH0002G.20240201010000.20250521074436.aerosol_mass_spectrometer.chemistry_ACSM.pm1_non_refractory.7w.1h.CH02L_Aerodyne_ToF-ACSM_092.CH02L_Aerodyne_ToF-ACSM_PAY.lev2.nas'\n",
+    "drop_column_from_nas_file(path_to_data_file, column_to_remove='inletP')"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},