diff --git a/gui/LabRobot22.py b/gui/LabRobot22.py
index 9ce7686..de13ba2 100644
--- a/gui/LabRobot22.py
+++ b/gui/LabRobot22.py
@@ -294,6 +294,7 @@ ttk.Label(fra2,textvariable=akttip).grid(row=0,column=4)
 fra3 = ttk.LabelFrame(downrightframe2,text=' Vessels')
 fra3.grid(row=2,column=0,sticky='nw')
 vess = tk.StringVar()
+aktvess = tk.StringVar()
 def do_vessels(*args):
     global reakt
     reakt = LabReactBlock(vess_config[vess.get()]['rxoffset'],
@@ -307,6 +308,8 @@ def do_vessels(*args):
     )
 vessopt = ttk.OptionMenu(fra3,vess,vessels[0],*vessels,command= do_vessels)
 vessopt.grid(row=0,column=0)
+ttk.Label(fra3,text='Vessel Nr').grid(row=0,column=1)
+ttk.Label(fra3,textvariable=aktvess).grid(row=0,column=2)
 
 do_vessels()
 
@@ -375,13 +378,13 @@ def load():
 b13.config(command=load)
 
 def dispense():
-    v = reacvol.get()
+    v = float(reacvol.get())
     if pip.dispenseVol(v):
         command.append(pip.sendE().encode('utf-8'))
     else : 
         takeChem()
         upTip()
-        command.append(pip.get_tip(react.same()).encode('utf-8'))
+        command.append(pip.get_tip(reakt.same()).encode('utf-8'))
         downTip()
         if pip.dispenseVol(v):
             command.append(pip.sendE().encode('utf-8'))
@@ -407,7 +410,7 @@ b14.config(command=takeChem)
 def nextVessel():
     upTip()
     command.append(pip.get_tip(reakt.next()).encode('utf-8')) 
-    reakt.set(reakt.akt)
+    aktvess.set(reakt.akt)
     downTip()   
 b15.config(command=nextVessel)
 
@@ -426,7 +429,7 @@ def loadSerie():
     for i in range(p,q):       
         print(i)
         reakt.akt = i
-        reakt.set(reakt.akt)
+        aktvess.set(reakt.akt)
         upTip()
         command.append(pip.get_tip(reakt.same()).encode('utf-8'))
         downTip()
diff --git a/gui/chemicals.ini b/gui/chemicals.ini
index c069772..a602898 100644
--- a/gui/chemicals.ini
+++ b/gui/chemicals.ini
@@ -1,9 +1,9 @@
 [Water]
-x = 50
-y = 10
-z = 10
+x = 200
+y = 50
+z = 70
 volume = 100
-z/ml = 0.1
+z/ml = 0.5
 reakvolume = 100
 
 [Propanol]
diff --git a/gui/labrobot.py b/gui/labrobot.py
index 1473814..d6029e1 100644
--- a/gui/labrobot.py
+++ b/gui/labrobot.py
@@ -165,20 +165,19 @@ class ChemLoc():
         change of surface per ml """
 
     def __init__(self,xloc,yloc,zloc,vol,deltaz,chemvol):
-        self.xloc = xloc
-        self.yloc = yloc
-        self.zloc = zloc
-        self.vol = vol
-        self.deltaz = deltaz
-        #self.tauch = tauch
-        self.chemvol = chemvol
+        self.xloc = float(xloc)
+        self.yloc = float(yloc)
+        self.zloc = float(zloc)
+        self.vol = float(vol)
+        self.deltaz = float(deltaz)
+        self.chemvol = float(chemvol)
 
     def getXY(self):
         return self.xloc,self.yloc
 
     def load(self,ml):
         if self.vol > ml:
-            z = self.zloc + self.tauch;
+            z = self.zloc 
             self.zloc = self.zloc + self.deltaz*ml
             self.vol = self.vol - ml
             return z
diff --git a/gui/pipettes.ini b/gui/pipettes.ini
index 5c21a82..f2ef079 100644
--- a/gui/pipettes.ini
+++ b/gui/pipettes.ini
@@ -1,6 +1,6 @@
 [1000]
 xoffset = 15.5
-yoffset = 5.5
+yoffset = 5
 rows = 5
 cols = 10
 xspace = 12.0