diff --git a/scripts/demos/sud/demo_sud.py b/scripts/demos/sud/demo_sud.py
index 28f9c25..12d2098 100644
--- a/scripts/demos/sud/demo_sud.py
+++ b/scripts/demos/sud/demo_sud.py
@@ -102,6 +102,8 @@ if __name__ == '__main__':
 	_stirrer_speed = []
 	_heater_power_set = []
 	_heater_power_eff = []
+	_plant_M = []
+	_plant_C = []
 
 	wait_user_elapsed = 0.0
 	t = 0.0
@@ -142,6 +144,8 @@ if __name__ == '__main__':
 		_stirrer_speed.append(stirrer.speed * stirrer.isOn)
 		_heater_power_set.append(heater.power_set)
 		_heater_power_eff.append(heater.power_eff)
+		_plant_M.append(plant.M)
+		_plant_C.append(plant.C)
 
 		t += dt
 		steps += 1
@@ -181,6 +185,16 @@ if __name__ == '__main__':
 	legend(["stirrer speed (effective)"])
 	grid(True)
 
+	figure(3)
+	subplot(2, 1, 1)
+	plot(_t_arr, _plant_M, '-b', linewidth=1)
+	legend(["plant M (kg)"])
+	grid(True)
+	subplot(2, 1, 2)
+	plot(_t_arr, _plant_C, '-b', linewidth=1)
+	legend(["plant C (J/(kg*K))"])
+	grid(True)
+
 	show()
 
 	print("End of program")
diff --git a/sude/sud_0010.json b/sude/sud_0010.json
index 40408f2..d69c2b4 100644
--- a/sude/sud_0010.json
+++ b/sude/sud_0010.json
@@ -95,6 +95,7 @@
 			}
 		},
 		{
+			"water_mass"		: 20,
 			"descr": "Heizen Abmaischen",
 			"ramp": {
 				"rate": 1.0,
@@ -102,7 +103,7 @@
 			}
 		},
 		{
-			"water_mass"		: 21,
+			"water_mass"		: 20,
 			"descr": "Halten Abmaischen",
 			"user_message": "Quittieren zum Abmaischen",
 			"user_wait_for_continue": true,